CN108420506B - But washing attracts and quick replacement catheter's abdominal cavity pincers - Google Patents

Abstract

The utility model relates to a pair of abdominal forceps capable of flushing, sucking and rapidly replacing a catheter, which is mainly applicable to abdominal operations of human bodies. The utility model comprises a clamping mechanism and a flushing suction mechanism. The clamping mechanism comprises a clamp head, a push rod, a rotating shaft, a hanging spring and a trigger, and the trigger has an automatic reset function; the flushing suction mechanism comprises a sliding switch, a catheter, a flushing valve, a negative pressure suction valve and a guide tube connector, and the sliding switch has the functions of clamping the catheter and pushing the catheter. The utility model has reasonable and compact structural design, integrates the functions of flushing tissues and sucking waste liquid into the abdominal cavity forceps device, saves operation time, can quickly replace the disposable catheter, avoids unnecessary operation infection, is convenient and reliable to use and has low overall cost.

Description

A peritoneal forceps capable of flushing, suctioning and quickly changing catheters

Technical field

The invention relates to a medical instrument, and in particular to an abdominal forceps suitable for operations such as stripping, clamping, flushing, and suctioning in human abdominal surgery.

Background technique

Traditional abdominal surgical forceps include an interconnected forceps rod and a handle assembly. The forceps rod includes an inner pull rod, a forceps sheath tube and a forceps core. The inner pull rod and forceps core are respectively connected to the forceps sheath tube. The handle assembly includes a handle and a rotating shaft. The rotating adjustment mechanism can be rotated. During surgery, the operator controls the rotation of the handle to open and close the clamp heads to achieve peeling and clamping functions. However, the entire operation is often accompanied by frequent tissue flushing and waste fluid aspiration operations. Therefore, the doctor needs to switch back and forth between flushing instruments, suction instruments and abdominal forceps during the operation. The switching of medical instruments makes coordination difficult. In addition, changing instruments will also waste a certain amount of time; more importantly, there is a certain probability that the irrigation fluid cannot be sucked immediately and flows to non-surgical parts, causing tissue infection; what is even more troublesome is that in minimally invasive surgery, frequent instrument changes It will bring great inconvenience to the operation.

Chinese Patent No. 2011100865671 discloses an invention patent called "Built-in Aspirator for Laparoscopic Surgery". Although it can flush tissue and aspirate waste fluid at the surgical site at the same time, it requires that the aspirator be always placed during surgery. In the abdominal cavity to reduce the disadvantages caused by changing instruments; therefore, it inevitably has the following disadvantages: When using it, the doctor must use pliers to hold the suction head to suck out the bleeding and exudate, so it is difficult for the doctor to do it Rapid flushing and rapid aspiration may cause bleeding and untimely aspiration of exudate, which may lead to infection of non-surgical sites.

Chinese Patent No. 002187582 discloses a utility model patent named "Laparoscopic Surgical Forceps", which also includes a forceps rod and a handle assembly connected to each other, which can move the forceps rod back and forth to open and close the forceps heads. However, there are also obvious disadvantages: the irrigation and suction device needs to be replaced frequently during surgery, which wastes time and risks infection.

Contents of the invention

The technical problem to be solved by the embodiments of the present invention is to provide an abdominal forceps capable of flushing, suctioning and quickly changing the catheter. It can simultaneously perform tissue dissection, tissue clamping, tissue flushing and waste fluid aspiration at the surgical site.

In order to solve the above technical problems, embodiments of the present invention provide a peritoneal forceps that can flush, suction, and quickly change catheters, including a forceps rod assembly and a handle assembly. The forceps rod assembly includes a forceps head, an outer sleeve, and a forceps placed on the outer sleeve. The inner push rod in the tube is used to link the opening and closing movement of the clamp head; the handle assembly includes a handle, a trigger mechanism, a rotating mechanism, and a flushing and suction mechanism, and the handle is fixedly connected to the outer sleeve, The trigger mechanism is arranged in the handle, and is used to drive the rotating mechanism to link the inner push rod to expand and contract. The flushing and suction mechanism includes a suction conduit and a flushing conduit connected to the outer sleeve.

Further, the rotating mechanism includes an inner push rod rotating in the handle and a sphere provided at the head end of the inner push rod. An axial cylindrical groove is provided on the end surface of the inner push rod. The sphere is arranged in the cylindrical groove, the inner push rod rotating bar has a notch groove connected to the side of the cylindrical groove, and the head end of the inner push rod moves between the notch groove and the cylindrical groove. between.

Furthermore, the trigger mechanism includes a trigger. The top of the trigger is in a cam shape and is in contact with the side end surface of the inner push rod. A return spring is provided between the inner push rod and the handle.

Furthermore, the flushing and suction mechanism also includes a flushing and suction valve. The flushing and suction valve includes a rolling pressure wheel and a bracket. The bracket is provided with an inclined chute, and the rolling pressure wheel is slidably arranged on the In the chute, the lower part of the rolling pressure wheel is in pressure fit with the suction conduit and the flushing conduit.

Furthermore, the irrigation and suction mechanism also includes a conduit sliding switch. The conduit sliding switch includes a boss, a locking block and a bolt. The locking block is provided with a slot or notch for placing the suction conduit or the flushing conduit. groove, the lower part of the boss is placed in the handle, a through hole is provided on the boss, the bolt passes through the through hole and is threadedly connected to the locking block, and a positioning position is provided in the handle. In the frame of the locking block, a limiting block is provided in the handle below the locking block.

Furthermore, a U-shaped groove is provided on the top of the handle, and the lower part of the boss is disposed in the U-shaped groove.

Implementing the embodiments of the present invention has the following beneficial effects: the structural design of the present invention is reasonable and compact, peeling and clamping tissue, rinsing tissue and aspirating waste liquid are completed in one device, allowing free rinsing, reducing frequent switching of instruments, and saving operation time. The catheter can be quickly replaced, avoiding unnecessary surgical infection, and is easy and reliable to use, with low overall cost.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

Figure 2 is a schematic diagram of the overall cross-sectional structure of the present invention;

Figure 3 is a partially enlarged structural schematic diagram showing part A in Figure 2;

Figure 4 is a schematic structural diagram of the clamp rod assembly part;

Figure 5 is a schematic structural diagram of the flushing and suction valve;

Figure 6 is a schematic structural diagram of the catheter slide switch;

Figure 7 is a schematic structural diagram of the trigger mechanism;

Figure 8 is a schematic structural diagram of the clamp head when it is opened;

Figure 9 is a schematic structural diagram of the pliers head when closed.

Among them, 1-upper clamp head, 2-lower clamp head; 3-front connecting plate, 4-rear connecting plate; 5-inner push rod; 6-fixed chuck; 7-clamp rod positioning sleeve; 8-outer sleeve; 9-bolt; 10, 11-boss; 12, 13-locking block; 14-suction catheter; 15-flushing catheter; 16-negative pressure suction catheter connector; 17-flushing catheter connector; 18, 19-rolling pressure wheel ; 20-trigger; 21-inner push rod turning bar; 22-return spring; 23-handle; 24-handle cover; 25-bracket; 26-slide; 27-frame; 28-limit block.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings.

Refer to the schematic structural diagrams shown in Figures 1, 2, and 3.

An embodiment of the present invention provides an abdominal forceps capable of flushing, suctioning, and quickly changing a catheter, including a forceps rod assembly and a handle assembly.

The clamp rod assembly includes an upper clamp head 1, a lower clamp head 2, a front connecting plate 3, a rear connecting plate 4, a fixed chuck 6, a clamp rod positioning sleeve 7, an outer sleeve 8 and an inner push rod 5 placed in the outer sleeve 8 .

The clamp rod positioning sleeve 7 is fixedly connected to the outer sleeve 8, and the outer sleeve 8 is fixedly connected to the handle 23.

Referring to the enlarged view of the partial structure of Figure 3 and Figure 4, the upper clamp head 1, the lower clamp head 2, the front connecting plate 3, the rear connecting plate 4, and the inner push rod 5 are connected to each other with a cylindrical pin clearance fit. The upper clamp head 1 and The connecting pin of the lower clamp head 2 is fixed with the fixed chuck 6.

The handle assembly includes a handle 23, a trigger mechanism, a rotating mechanism, and a flushing and suction mechanism. The trigger mechanism is arranged in the handle 23. The trigger mechanism includes a trigger 20. The top of the trigger 20 is in a cam shape and is in contact with the end surface of the inner push rod turn bar 21. A return spring 22 is provided between the push rod rotating bar 21 and the handle 23 .

The trigger 20, the inner push rod rotating bar 21, and the return spring 22 are all positioned on the handle 23 by pins.

The rotating mechanism includes a rotating inner push rod swivel 21 arranged in the handle 23 and a sphere 51 provided at the head end of the inner push rod 5. The inner push rod swivel 21 has a smooth cylindrical groove 52, and the inner push rod swivel 21 has an open side. There is a notch groove 53 connected to the side of the cylindrical groove 52, and the head end of the inner push rod 5 moves between the notch groove 53 and the cylindrical groove 52. As the head end of the inner push rod 5 moves between the notch groove 53 and the cylindrical groove 52 , the rotational motion of the inner push rod rotating bar 21 is converted into a linear motion of the inner push rod 5 .

The flushing and suction mechanism includes a suction conduit 14, a flushing conduit 15, a negative pressure suction catheter connector 16, a flushing conduit connector 17, a catheter sliding switch, and flushing and suction valves.

The flushing and suction valve includes rolling pressure wheels 18 and 19 and a bracket 25. The bracket 25 is provided with an inclined chute 26. The rolling pressure wheels 18 and 19 are slidably arranged in the chute 26. The lower parts of the rolling pressure wheels 18 and 19 are respectively connected with the chute 26. The suction conduit 14 and the flushing conduit 15 are press-fitted.

The catheter slide switch includes bosses 10, 11, locking blocks 12, 13 and bolts 9. The locking blocks 12, 13 are provided with through grooves or notch grooves for placing the suction catheter or flushing catheter. The lower part of the boss is placed in the handle. A through hole is provided on the table, and bolts pass through the through hole and are threadedly connected to the locking block. More preferably, a frame 27 for positioning the locking block is provided in the handle, and a limiting block 28 is provided below the locking block in the handle. . The limiting effect of the frame 27 on the locking block allows the locking block to move within the length range of the frame 27 and restrict its rotation, while the limiting block 28 limits the adjustment range of its bolt.

A U-shaped groove 29 is provided at the top of the handle 23, and the lower part of the boss is arranged in the U-shaped groove. The bosses 10 and 11 can slide in the U-shaped groove 29, so that the suction ducts 14 provided on the locking blocks 12 and 13 can be flushed. The conduit 15 can be extended forward for work.

When the present invention is in use, the clamping operation is: refer to Figures 7 and 8, pull the trigger 20, push the inner push rod swivel 21 to rotate, and drive the inner push rod 5 to move axially. Under the fixing effect of the fixed chuck 6, The upper clamp head 1 and the lower clamp head 2 make opening and closing movements with the fixed pin as the center of rotation. When the inner push rod rotating bar 21 rotates around the fixed pin, it is pulled by the return spring 22, so it can automatically reset after the trigger 20 is released.

Control the flushing and suction speed operations: Refer to Figure 4, push the rolling pressure wheel 18 down the chute 26, and squeeze the flushing conduit 15, thereby achieving the effect of reducing the flow rate. The stroke of the rolling pressure wheel is limited by the groove in the handle cover 24. Refer to Figure 1.

Conduit replacement operation: refer to Figure 6, manually loosen the bolt 9. In this state, the conduit and the locking block 12 have a clearance fit, so the conduit can be pulled out from the direction of the clamp head. In the same way, the new conduit is also assembled from the direction of clamp rod positioning sleeve 7. After the conduit is positioned, manually tighten the bolt to connect the conduit to the locking block.

The sliding boss 10 can make the suction conduit 14 and the irrigation conduit 15 expand and contract, and when necessary, extend out to flush the target tissue and aspirate waste fluid.

The inner push rod and clamp head part of the present invention are detachable and sterilizable, and the catheter for irrigation and suction can be quickly replaced.

What is disclosed above is only a preferred embodiment of the present invention. Of course, it cannot be used to limit the scope of the present invention. Therefore, equivalent changes made in accordance with the claims of the present invention still fall within the scope of the present invention.

Claims (3)

1. An abdominal forceps capable of flushing, suctioning, and quickly changing catheters, which is characterized in that it includes a clamp rod assembly and a handle assembly. The clamp rod assembly includes an upper clamp head, a lower clamp head, a front connecting plate, a rear connecting plate, and a fixed The chuck, the outer sleeve, the clamp rod positioning sleeve fixedly connected to the outer sleeve and the inner push rod placed in the outer sleeve, the upper clamp head, the lower clamp head, the front connecting plate, the The rear connecting plate and the inner push rod are connected to each other with a clearance fit of cylindrical pins. The connecting pins of the upper clamp head and the clamp head are fixed to the fixed clamp, and the inner push rod is used to link the clamp heads. Opening and closing movement; the handle assembly includes a handle, a trigger mechanism, a rotating mechanism, and a flushing and suction mechanism. The handle is fixedly connected to the outer sleeve. The trigger mechanism is arranged in the handle. The trigger mechanism is used to drive The rotating mechanism links the inner push rod to expand and contract. The flushing and suction mechanism includes a suction conduit and a flushing conduit connected to the outer sleeve. The flushing and suction mechanism also includes flushing and suction valves. The flushing and suction valves include Rolling pressure wheel and bracket, the bracket is provided with an inclined chute, the rolling pressure wheel is slidably arranged in the chute, and the lower part of the rolling pressure wheel is in pressure fit with the suction conduit and flushing conduit; The irrigation and suction mechanism also includes a conduit sliding switch. The conduit sliding switch includes a boss, a locking block and a bolt. The locking block is provided with a through groove or a notch groove for placing the suction conduit or the irrigation conduit. The lower part of the boss is placed in the handle, a through hole is provided on the boss, the bolt passes through the through hole and is threadedly connected to the locking block, and a positioning locking block is provided in the handle. The frame of the handle is provided with a limiting block below the locking block; the rotating mechanism includes a rotating inner push rod rotating bar provided in the handle and a sphere provided at the head end of the inner push rod, so An axial cylindrical groove is provided on the end face of the inner push rod rotating bar, the sphere is arranged in the cylindrical groove, and a notch groove connected to the side of the cylindrical groove is opened on the side of the inner push rod rotating bar. The push rod head end is movable between the notch groove and the cylindrical groove. 2. The abdominal forceps capable of flushing, suctioning, and quickly changing catheters according to claim 1, wherein the trigger mechanism includes a trigger, and the top of the trigger is in a cam shape and is in contact with the end surface of the inner push rod turning bar. In cooperation, a return spring is provided between the inner push rod rotating bar and the handle. 3. The abdominal forceps capable of flushing, suctioning and quickly changing catheters according to claim 1, characterized in that a U-shaped groove is provided at the top of the handle, and the lower part of the boss is arranged in the U-shaped groove.