CN101185586A - Extradural puncturing needle - Google Patents
Extradural puncturing needle Download PDFInfo
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- CN101185586A CN101185586A CNA2007100326947A CN200710032694A CN101185586A CN 101185586 A CN101185586 A CN 101185586A CN A2007100326947 A CNA2007100326947 A CN A2007100326947A CN 200710032694 A CN200710032694 A CN 200710032694A CN 101185586 A CN101185586 A CN 101185586A
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Abstract
The invention relates to a medical apparatus, in particular to a subdural tap needle used for intravertebral anesthesia, which consists of an external needle and a needle core. The external needle consists of a tubular first needle body and a first needle bar, wherein, the intersection point of the opening of a first needle tip and the middle axis of the first needle body is in the inner of the opening. A second needle tip shapes in cone and the tip end of the second needle tip passes through the opening of the first needle tip. The outer wall of the second needle tip is tightly matched with the inner of the external needle opening. The first needle body is provided with a fixed facility which can control the inserting depth so as to avoid puncturing dura mater accidentally. The needle tip of the subdural tap needle can separate tissue and muscle fibre bluntly. The wound is small and easy to heal; the spinal puncture needle can not be bent and the success rate of the spinal puncture can be increased. Because of small friction, the mental fragments are not easily produced, which avoids the hidden trouble caused by the residues of mental fragments left in the body of a patient.
Description
Technical field
The present invention relates to a kind of medical instruments, particularly a kind of anesthesia spinal needle that is used for intravertebral anesthesia.
Background technology
Spinal column is the pillar of human body, but also is main thoroughfare and protective cover that nerve information is passed on.Spinal column as the central position of human body, structurally is positioned at the center of body, coordinates and control the activity of head and extremity.To the nerve that intervertebral foramina sends, controlling the sensation and the motor function of whole body from each.Ill and need perform a surgical operation or carry out diagnostic test when operation when human body, for the pain that alleviates the patient, ensure patient safety, create good surgical condition, just need anaesthetize the patient.Intravertebral anesthesia is a kind of important anesthesia method, it is that local anesthesia is injected intraspinal different lacuna, the respective regions that spinal nerves is arranged produces anesthetic action, comprises the anesthesia of subarachnoid block anesthesia (being called lumbar anesthesia or ridge fiber crops again) and epidural block.
Spinal cord is positioned at the canalis spinalis of vertebra and ligament formation, is the spinal meninges parcel.Spinal meninges divides three layers from outside to inside, i.e. dura mater, arachnoidea and mantle.From skin to the dura mater, need pass through subcutaneous tissue, supraspinal ligament, interspinal ligaments, ligamenta flava successively.Dura mater is divided into inside and outside two-layer.Outer periosteum and ligamenta flava with the canalis spinalis inwall merges, and internal layer forms the dural sac of parcel spinal cord.The inside and outside gap between two-layer of dura mater is called epidural space, and dura mater and arachnoidea almost stick together, and the potential lacuna between two-layer is gap under the dura mater, man's the widest part about 5-6mm in gap under the dura mater.Form subarachnoid space between the mantle on arachnoidea and covering spinal cord surface, subarachnoid space is full of cerebrospinal fluid, and spinal cord is suspended among the cerebrospinal fluid.
The combined spinal-epidural anesthesia pin comprises epidural anesthesimeter and lumbar anesthesia anesthetic needle.Epidural anesthesimeter (or is called anesthesia spinal needle, or epidural needle) forms by interior pin (or nook closing member) and outer pin, after the epidural puncture success, pin in extracting out, and in the outer pin inner chamber that plays guiding function, insert epidural catheter, by hard external conduit local anaesthetics is injected epidural space, the retardance spinal nerve root makes the zone of its domination produce temporary paralysis, causes analgesis, of flaccid muscles, to satisfy the needs of operation.During epidural puncture, anesthesia spinal needle reaches epidural space after passing skin, subcutaneous tissue, supraspinal ligament, interspinal ligaments, ligamenta flava successively.After puncture needle is worn out ligamenta flava, the sense that falls through often occurs, weaken or disappear, show that the epidural needle point has entered epidural space, can put into epidural space to epidural catheter by the inner chamber of epidural needle hollow through epidural needle injection air or liquid resistance.
The shortcoming that anesthesia spinal needle at present commonly used exists:
1, before anesthesia spinal needle arrives epidural space, need relatively large power owing to break through tough and tensile ligamenta flava, breakthrough ligamenta flava, anesthesia spinal needle needle point reach epidural space simultaneously, because effect of inertia, anesthesia spinal needle can not stop immediately, even can wear out dura mater by epidural space.It is reported, wear out dura mater incidence rate up to 1%, particularly gerontal patient's spinal column regression gradually can cause spinal canal stenosis, ligament calcification in addition, the puncture at need if inserting needle too quickly, very easily wear out dura mater.Even epidural puncture is operated very practician, the generation that can not avoid mistake to wear dura mater fully.Wear out dura mater and remove and can cause the too high and full spinal anesthesia in epidural block plane, the life security that jeopardizes patient the most common adverse consequences outward is headache.Headache is that dura mater is difficult for healing because after wearing out dura mater, and the cerebrospinal fluid epidural space that bleeds reduces cerebrospinal pressure, and the marrowbrain tissue that is suspended in the cerebrospinal fluid descends, and local compression causes that orthostatic has a headache.Back median line ligamenta flava is up-narrow and down-wide to the distance of dura mater, and is the wideest with waist 2 gaps, adult male 5-6mm, and middle chest is gradually narrow, 3-5mm, the about 1mm of dura mater breast section thickness, and waist 1 waist 2 is 0.66mm, waist 3 waists 4 are 0.33mm.
2, epidural needle sharp-crested footpath is bigger, needle point cut off dura mater fibrous connective tissue, form than large break, extremely difficult healing, the patient that about 2/3 mistake is worn dura mater has a headache.
3, when placing epidural catheter by the inner chamber of pin outside the anesthesia spinal needle, because the epidural catheter position is not good, epidural catheter is strayed into non-epidural space, blood vessel or subarachnoid space, in the time of need withdrawing from epidural catheter, need anesthesia spinal needle is withdrawed from together, even epidural puncture is placed epidural catheter again, increases the damage that epidural puncture causes.As only moving back epidural catheter, do not move back epidural needle, epidural catheter can be cut off by the most advanced and sophisticated sharp sword of epidural needle, causes in the residual patient's body of foreign body, even operation also is difficult for taking out the epidural catheter that cuts off, and brings bigger wound.
4, spinal needle passes from the epidural needle inner chamber at spoon shape tip, with the epidural needle friction, produces metal fragment, and metal fragment enters subarachnoid space or epidural space can cause adverse consequences.
5, spinal needle can bend when the pin inner chamber passes outside the anesthesia spinal needle at spoon shape tip, can depart from subarachnoid space, causes the lumbar anesthesia puncture failure.
The problems referred to above have all brought unnecessary trouble and misery for doctor and patient, and existing necessity provides a kind of wound little, and the anesthesia spinal needle of the easy healing of wound.
Summary of the invention
In order to overcome above-mentioned defective, it is little to the invention provides a kind of wound, and the anesthesia spinal needle of the easy healing of wound.
Anesthesia spinal needle of the present invention, it comprises outer pin and nook closing member, described nook closing member is sheathed in the described outer pin, and described outer pin comprises tubulose first needle body and first needle stand, and described first needle body, one end forms the first needle point other end with opening and fixedlys connected with described first needle stand; Described nook closing member comprises second needle body and second needle stand, and described second needle body, one end forms second needle point, and the other end is fixedlyed connected with described second needle stand; Wherein, the intersection point of the axis of the opening of described first needle point and described first needle body is in the inside of described opening; Described second needle point is coniform, and the tip portion of described second needle point passes from the described first needle point opening, and the edge of the outer wall of described second needle point and the opening of described outer pin fits tightly.
Wherein, described outer needle body is provided with fixture, and described fixture optionally is fixed on a certain position of first needle body, and described needle body and fixture can not be relatively moved.
Preferably, described fixture is a thing that holds that is held on first needle body.Described first needle body is provided with described and holds the annular groove that thing cooperates.
In a specific embodiment of the present invention, described fixture is a nut, and described first needle body is provided with the screw thread that cooperates with described nut.
In order to improve anesthesia spinal needle of the present invention, also be provided with scale on described first needle body.Can control depth of needle with reference to described scale.
When anesthesia spinal needle of the present invention, described nook closing member are sheathed in the described outer pin, cone tip of the common composition of described second needle point and first needle point.During puncture, the cone tip of using this to combine.
The opening shape of described outer pin can be circle or ellipse, and perhaps other is irregularly shaped.
It is relatively round more blunt that anesthesia spinal needle of the present invention, the edge of its opening are provided with, and do not have sharp sword.It is more mellow and fuller that the edge that holds thing etc. on first needle body also is provided with, except needle point with place, contact skin edge all be provided with more mellow and fuller, can not scratch patient skin like this.
The using method and the use of anesthesia spinal needle of the present invention are as follows: the vertebra gap of at first determining puncture; To puncture then needs the skin of process, subcutaneous tissue, and ligament is used 1% lignocaine local anesthesia; Wear out skin with broken sword-shaped needle, so that the anesthesia spinal needle puncture; The application anesthesia spinal needle punctures along the median line of vertebra, with holding thing or nut restriction depth of needle; When puncture needle enters certain depth, withdraw from nook closing member, connect syringe, inject air or physiological saline solution, weaken or disappear, then show the arrival epidural space as resistance at first needle stand.As not reaching epidural space through judging, then screw out and hold thing 3-5mm, continue median line inserting needle along vertebra, judge whether to reach epidural space again, puncture repeatedly, withdraw from nook closing member, judge whether to reach the operation of epidural space, arrive epidural space up to anesthesia spinal needle; Take off the syringe of first backshank, place epidural catheter; Withdraw from anesthesia spinal needle, keeping epidural catheter is 3-5cm in the degree of depth of epidural space, connect epidural catheter joint and syringe, after resorption does not have cerebrospinal fluid and blood, fixing epidural catheter, use in order to epidural anesthesia. as resorption in the epidural catheter cerebrospinal fluid and blood are arranged, then reappose epidural catheter, till resorption does not have cerebrospinal fluid and blood.
Anesthesia spinal needle of the present invention, the intersection point of the axis of the opening of first needle point and first needle body is in described opening, the conical tip of described nook closing member (second needle point) passes from the described first needle point opening, like this, described outer pin and nook closing member common combination form a cone tip, cut and organize with meat fiber with existing spoon shape needle point during puncture and compare, and anesthesia spinal needle needle point of the present invention can inactive chorista and meat fiber, its wound is little, easily healing.Even wear out dura mater, little to the damage of dura mater, the dura mater wound heals easily, and the probability of patient's headache also can reduce.To the damage of ligament, muscle, periosteum, reduce the incidence rate of postoperative backache in the time of also can puncturing by reduction.The more important thing is, the puncture later stage is when using the lumbar anesthesia puncture needle, lumbar anesthesia puncture needle needle body is not crooked just to pass in first needle body of described anesthesia spinal needle, like this, compared with prior art, anesthesia spinal needle of the present invention does not change the direction of lumbar anesthesia puncture needle inserting needle, increased the success rate of puncture, and the frictional force between lumbar anesthesia puncture needle and the epidural needle reduces, can not produce metal fragment, avoided metal fragment to remain in the healthy hidden danger of being brought in the patient body like this, and the drug anesthesia puncture needle also is difficult for departing from subarachnoid space, the puncture success rate of raising lumbar anesthesia.。Anesthesia spinal needle is provided with fixture, the depth of needle of may command anesthesia spinal needle, after can effectively avoiding anesthesia spinal needle to wear out ligamenta flava, because epidural needle tip resistance reduces suddenly greatly, in time do not fail puncture needle outside hard towards the power of dura mater direction, and effect of inertia, the epidural puncture needle point can be worn out dura mater, causes adverse consequences.The outer needle tip edge of anesthesia spinal needle of the present invention does not have the most advanced and sophisticated outer rim of the epidural needle of prior art not have sharp sword, can not cut off epidural catheter, only moves back epidural catheter and gets final product.
Introduce anesthesia spinal needle of the present invention in detail below in conjunction with accompanying drawing; following drawings and Examples only are to be used for explaining anesthesia spinal needle of the present invention; and should not limit protection scope of the present invention with this, improvement or the equivalent variations done according to content disclosed by the invention still belong to protection scope of the present invention.
Description of drawings
Fig. 1 is in one embodiment of the present of invention, the structural representation of the outer pin of anesthesia spinal needle;
Fig. 2 is the nook closing member structural representation of anesthesia spinal needle of the present invention;
Fig. 3 is the outer pin of anesthesia spinal needle shown in Figure 1 and the structural representation that anesthesia spinal needle nook closing member shown in Figure 2 cooperates;
Fig. 4 is the enlarged drawing at A place among Fig. 1;
Fig. 5 is the enlarged drawing at B place among Fig. 2;
Fig. 6 is the enlarged drawing at C place among Fig. 3;
Fig. 7 is the structural representation at the needle point position of existing anesthesia spinal needle;
The structural representation at the needle point position when Fig. 8 is outer pin of anesthesia spinal needle of the present invention and the cooperation of lumbar anesthesia puncture needle;
Fig. 9 is the structural representation at the anesthesia spinal needle of prior art and the lumbar anesthesia puncture needle needle point position when cooperating;
Figure 10 is in an alternative embodiment of the invention, the anesthesia spinal needle structural representation;
Figure 11 is in another specific embodiment of the present invention, the anesthesia spinal needle structural representation;
Figure 12 is for holding the axonometric chart of thing among Figure 11;
Figure 13 is the cross-sectional structure sketch map of the A-B line direction that holds thing among Figure 12;
Figure 14 is the cross-sectional structure sketch map in the C-D orientation that holds thing among Figure 12.
The specific embodiment
As shown in Figure 1, in one embodiment of the invention, described anesthesia spinal needle comprises outer pin and nook closing member, and wherein said outer pin comprises first needle body 101 and first needle stand 102, one end of described first needle body 101 forms first needle point 1011, and the other end is fixedlyed connected with first needle stand 102.Described first needle point 1011 is provided with opening 1012, also is provided with scale 1013 on described first needle body, observes depth of needle according to described scale during puncture.Described first needle stand is a needle stand common in the prior art.
As shown in Figure 4, the structure enlarged drawing at the first needle point position of described anesthesia spinal needle, intersect the circle at opening 1012 places on described first needle point or the axis of elliptic plane and described first needle body 101, be described first needle body axis 01 with can pass from described opening 101, its intersection point 02 is in described open interior.
As shown in Figure 2, described nook closing member 20 comprises second needle body 201 and second needle stand 202, one end of described second needle body 201 is second needle point 2011, the other end is fixedlyed connected with second needle stand 202, second needle body optionally is provided with a groove 2022 near the position of second needle point 2011, and described in other embodiments groove 2022 may not exist.Described second needle point 2011 is coniform.Fig. 5 is the enlarged drawing of described second needle point 2011.
As shown in Figure 3, when described outer pin 10 and nook closing member 20 mated condition thereof, described nook closing member 20 is enclosed within described outer pin inside, when second needle stand 202 and first needle stand 102 just are held in a time-out, the part of described second needle point 2011 passes from the opening 1012 of described anesthesia spinal needle, as described in Figure 6, just combine closely with the outer wall of the cone tip of described second needle point in the edge of described anesthesia spinal needle opening 1012.
When puncturing with anesthesia spinal needle, described nook closing member 20 overlaps outside in the pin, state promptly shown in Figure 3, its compound needle point is coniform like this, in its piercing process, and described needle point passivity separating muscle or tissue, pass in the middle of the fiber of muscle or tissue, its wound is less, easily healing.As Fig. 7, the needle point after existing outer pin and nook closing member thereof are compound is the spoon shape, and in its piercing process, described needle point cuts muscle or tissue, promptly cuts off the fiber of muscle or tissue, and its wound is bigger, the difficult healing of wound.
As shown in Figure 8, when anesthesia spinal needle of the present invention and lumbar anesthesia puncture needle are used the lumbar anesthesia puncture needle can be smoothly outside anesthesia spinal needle the opening of pin pass, and lumbar anesthesia puncture needle needle body is not crooked.Compare with the lumbar anesthesia puncture needle of the prior art shown in Figure 9 and the engagement process of anesthesia spinal needle, the needle body of lumbar anesthesia puncture needle of the prior art must crookedly could pass from the outer pin of anesthesia spinal needle later, frictional force between anesthesia spinal needle and the lumbar anesthesia puncture needle is big like this, be easy to generate metal fragment and remain in patient's body, brought bigger hidden danger for patient's body health.The outer pin of anesthesia spinal needle of the present invention produces friction when cooperating with the lumbar anesthesia puncture needle hardly, more can not produce metal fragment.
In another specific embodiment of the present invention, also be provided with a fixture on described first needle body, as shown in figure 10, described fixture is a nut 1015, corresponding with described nut, described first needle body 101 is provided with the screw thread 1014 that cooperates with described nut 1015, and described nut 1015 can be fixed on some positions of described first needle body 101, and inserting needle is dark excessively when preventing to puncture.As shown in Figure 9, described fixture can be one and holds thing 1013, and described first needle body is provided with described and holds the holddown groove 1014 that thing cooperates.Wherein said screw thread 1014 is should be slick and sly, do not have corner angle, and screw thread try one's best dense, in puncturing like this, first needle body 101 enters in the intravital process of patient, can not increase patient's pain.
As shown in figure 11, in another specific embodiment of the present invention, described fixture is one and holds thing 1016, the first needle bodies 101 and be provided with some annular grooves 1017.As Figure 12,13 and shown in Figure 14, be the described detailed structure sketch map that holds thing, the described thing that holds comprises that a T-nut 10161 and one hold owner's body 10167, the described owner's of holding body 10167 is provided with a tubular opening 10165, described T-nut is provided with screw thread 10162, the described owner's of holding body 10167 is provided with the screw thread that cooperates with described screw thread 10162, described T-nut lower end flexibly connects a mover 10164, described mover 10164 lower ends are provided with semi-cylindrical hill 10163, annular protrusion 1017 on described semi-cylindrical hill 10163 and described first needle body is worked in coordination, and promptly can be held in together.
As shown in figure 14, described first needle body 101 is enclosed within described holding in the intermediary tubular opening 10165 of thing, described protruding 10163 and described groove 1017 be held in together, rotate described T-nut 10161, described T-nut 10161 is to the described mover 10164 of lower compression, like this projection 10163 just tightly block described first needle body 101, when puncturing like this, just can control the degree of depth of inserting needle accurately, prevent to wear out dura mater.
The anesthesia spinal needle of foregoing description, it is more mellow and fuller that the edge of its outer pin opening is provided with, and can not cut off hard external conduit like this.And each edge of described fixture is also more mellow and fuller, is not easy to scratch patient or medical personnel's skin like this.
In other embodiments of the invention, described anesthesia spinal needle, the opening of its outer pin are circular, perhaps other irregular shape.
Described fixture can be any a certain locational parts that can optionally be fixed on first needle body, is not limited to the above-mentioned optimal way of enumerating out; Described parts are fixed on first needle body, and what promptly described first needle body and described fixture can not be relative vertically moves.When puncturing like this, just can control the degree of depth of inserting needle accurately, can effectively prevent to wear out dura mater.
Claims (9)
1. anesthesia spinal needle, it comprises outer pin and nook closing member, and described nook closing member is sheathed in the described outer pin, and described outer pin comprises tubulose first needle body and first needle stand, described first needle body, one end forms first needle point with opening, and the other end is fixedlyed connected with described needle stand; Described nook closing member comprises second needle body and second needle stand, and described second needle body, one end forms second needle point, and the other end is fixedlyed connected with described second needle stand; It is characterized in that the intersection point of the axis of the opening of described first needle point and described first needle body is in the inside of described opening; Described second needle point is coniform, and the part of described second needle point passes from the described first needle point opening, and the edge of the outer wall of described second needle point and the opening of described outer pin fits tightly.
2. anesthesia spinal needle as claimed in claim 1 is characterized in that, described first needle body is provided with fixture, and described fixture optionally is fixed on a certain position of first needle body, and described first needle body and fixture can not be relatively moved.
3. anesthesia spinal needle as claimed in claim 2 is characterized in that, described fixture is a thing that holds that is held on described first needle body.
4. anesthesia spinal needle as claimed in claim 3 is characterized in that, described first needle body is provided with described and holds the annular groove that thing cooperates.
5. anesthesia spinal needle as claimed in claim 2 is characterized in that, described fixture is a nut, and described first needle body is provided with the screw thread that cooperates with described nut.
6. as claim 1 or the described anesthesia spinal needle of claim 2, it is characterized in that described first needle body is provided with scale.
7. as claim 1 or the described anesthesia spinal needle of claim 2, it is characterized in that described nook closing member is sheathed in the described outer pin, cone tip of the common composition of described second needle point and first needle point.
8. as claim 1 or the described anesthesia spinal needle of claim 2, it is characterized in that the opening of described first needle point is circular or oval.
9. as claim 1 or the described anesthesia spinal needle of claim 2, it is characterized in that described opening shape is irregularly shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100326947A CN101185586A (en) | 2007-12-19 | 2007-12-19 | Extradural puncturing needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100326947A CN101185586A (en) | 2007-12-19 | 2007-12-19 | Extradural puncturing needle |
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| Publication Number | Publication Date |
|---|---|
| CN101185586A true CN101185586A (en) | 2008-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100326947A Pending CN101185586A (en) | 2007-12-19 | 2007-12-19 | Extradural puncturing needle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302378A (en) * | 2011-06-23 | 2012-01-04 | 曲乐丰 | Saccule-type vena cava membrane puncturing dilator |
| CN103815952A (en) * | 2014-03-03 | 2014-05-28 | 吉林大学 | Disposable special needle for puncture of neck |
| CN105963018A (en) * | 2016-04-27 | 2016-09-28 | 何滨 | Intelligent spinal anesthesia puncture robot system |
| CN106821469A (en) * | 2017-03-24 | 2017-06-13 | 王翠翠 | A kind of modified form combined spinal-epidural lumbar puncture needle |
| CN109077758A (en) * | 2018-09-29 | 2018-12-25 | 南京亿高微波系统工程有限公司 | A kind of inserting needle control handle |
-
2007
- 2007-12-19 CN CNA2007100326947A patent/CN101185586A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302378A (en) * | 2011-06-23 | 2012-01-04 | 曲乐丰 | Saccule-type vena cava membrane puncturing dilator |
| CN103815952A (en) * | 2014-03-03 | 2014-05-28 | 吉林大学 | Disposable special needle for puncture of neck |
| CN103815952B (en) * | 2014-03-03 | 2015-11-11 | 吉林大学 | Disposable cervical region puncture special needle |
| CN105963018A (en) * | 2016-04-27 | 2016-09-28 | 何滨 | Intelligent spinal anesthesia puncture robot system |
| CN106821469A (en) * | 2017-03-24 | 2017-06-13 | 王翠翠 | A kind of modified form combined spinal-epidural lumbar puncture needle |
| CN106821469B (en) * | 2017-03-24 | 2024-01-26 | 王翠翠 | Improved lumbar-hard combined lumbar puncture needle |
| CN109077758A (en) * | 2018-09-29 | 2018-12-25 | 南京亿高微波系统工程有限公司 | A kind of inserting needle control handle |
| CN109077758B (en) * | 2018-09-29 | 2023-06-23 | 南京亿高医疗科技股份有限公司 | Needle insertion control handle |
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