Sleeve stitching instrument

Abstract

The utility model relates to a rotator cuff stitching instrument which aims to solve the problem that a puncture core needle is broken. Comprising a front suturing part, a middle conduction part and a rear handle control part, and the front suturing part comprises an end-ring-shaped upper fixed lip valve used for clamping rotator cuff tissue and a needle-tube-shaped lower movable lip valve capable of being controlled to be folded upwards; the front end of the needle-tube-shaped lower movable lip valve is communicated with an upward tubular needle head used for penetrating through the upper fixed lip valve end ring upwards, and the PDS degradable suture line penetrates out of the upward tubular needle head through the needle-tube-shaped lower movable lip valve. The upper end of the upward tubular needle head is a beveled tube head needle opening with a backward opening. And the upper part of the upward tubular needle head is bent backwards in an arc shape. The disposable puncture core needle has the advantages that the problem that the disposable puncture core needle is broken during suturing is solved, the cost of the puncture core is saved, and the damage to the rotator cuff is small.

Description

Technical Field

[0001] The utility model relates to a tendon tissue suture device, in particular to a rotator cuff suture device. Background Art

[0002] The commonly used rotator cuff suture device at present consists of a front suture part, a middle conduction part and a rear handle control part. The front suture part is composed of a lower fixed lip flap for clamping the rotator cuff and a manipulable upper movable lip flap hinged thereto. By operating the rear handle control part, a disposable puncture core needle can be obliquely pierced upward from the front of the lower fixed lip flap through the middle conduction part. It is elastically deformable and has a notch on the side of the tip. When the core needle passes through the rotator cuff, the notch structure can pass a high-strength braided wire from below the rotator cuff to above the rotator cuff. The prominent problem is that the piercing part of the disposable puncture hollow core needle is prone to break at the notch during suture, and once it breaks, it is very difficult to take out.

[0003] In addition, there is a rotator cuff suture threading device with a document number of CN214048945U, including: a threading needle, a wire pulling hook, a connecting sleeve and a pull rod. The wire pulling hook is arranged above the threading needle. The wire pulling hook and the threading needle can be operably closed to form an annular structure. One end of the threading needle is arranged in an upwardly curved arc shape. The other end of the threading needle is fixedly connected to the lower part of one end of the connecting sleeve. One end of the wire pulling hook is arranged in a downwardly curved arc shape. The connecting sleeve is a tubular structure arranged in a horizontal direction. The pull rod is slidably installed in the connecting sleeve. The other end of the wire pulling hook penetrates and is rotatably arranged inside one end of the connecting sleeve. The other end of the wire pulling hook is provided with a long strip-shaped waist hole. A second pin shaft is movably installed in the long strip-shaped waist hole. The second pin shaft is rotatably connected to one end of the pull rod. The other end of the wire pulling hook is also rotatably provided with a first pin shaft. The first pin shaft is arranged on the side of the long strip-shaped waist hole far away from the connecting sleeve. The first pin shaft is also rotatably connected to the upper part of one end of the connecting sleeve. Among them, the wire pulling hook can be operably in a closed state and an open state. When the wire pulling hook is in the closed state, one end of the wire pulling hook is on one side of the threading needle, and the second pin shaft is at one end of the long strip-shaped waist hole. When the wire pulling hook is in the open state, one end of the wire pulling hook is directly above the threading needle, and the second pin shaft is at the other end of the long strip-shaped waist hole. Due to the up-and-down hook setting, the distance between the widest parts of the upper and lower parts is much larger than that of the above-mentioned commonly used rotator cuff suture device, and it is more difficult to enter the minimally invasive small incision. Moreover, it is provided with a barb at one end of the wire pulling hook. When the wire pulling hook is in the closed state, the barb is arranged on the side of the wire pulling hook close to the threading needle, and the barb is inclined upward. In this way, the barb on the wire pulling hook is easily hooked by the fibers of the rotator cuff tissue, and it is not easy to take out, and it is also easy to cut the rotator cuff tissue. Summary of the Utility Model

[0004] The purpose of the present utility model is to overcome the above-mentioned defects of the prior art, and to provide a rotator cuff suture device that does not require a disposable puncture core needle during suture, which not only avoids the problem of breakage, but also solves the problems of difficult entry into the incision and easy entrapment by the rotator cuff tissue.

[0005] To achieve the above purpose, the rotator cuff suture device of the present utility model includes a front suture part, a middle conduction part and a rear handle control part. It is characterized in that the front suture part includes an end annular upper fixed lip flap for clamping the rotator cuff tissue and a needle tube-shaped lower movable lip flap that can be controllably closed upward; the front end of the needle tube-shaped lower movable lip flap is communicated with an upward tube-shaped needle head for passing upward through the end ring of the upper fixed lip flap, and the PDS biodegradable suture passes through the needle tube-shaped lower movable lip flap and exits from the upward tube-shaped needle head. During use, it is inserted into the subacromial space through the lateral approach of the shoulder joint, the upper and lower lip flaps of the suture device are opened, and it is advanced towards the cross-section direction of the rotator cuff. The two lip flaps of the suture device are placed on the upper and lower surfaces of the rotator cuff, and the handle is squeezed forcefully. At this time, the puncture needle of the lower lip of the suture device passes through the rotator cuff tissue and exits from the hole of the upper lip. At this time, the PDS line is inserted into the small hole in the middle and rear part of the suture device, and the PDS line finally exits from the puncture needle hole of the suture part. The PDS line is continuously advanced to make a longer line exposed in the joint cavity. The squeezed rear handle control part handle is released, and under the action of the return spring, the upper and lower lips of the suture part are separated, the puncture needle is pulled out from under the rotator cuff, and the suture device is taken out of the wound. At this time, the long PDS line in the joint cavity is brought out of the wound by the annular structure of the upper lip of the suture part. At this time, the PDS line serves as a traction line to bring the tail line of the anchor through the rotator cuff tissue. The same steps can be sutured multiple times. In this way, it has the advantages that there is no problem of breakage of the disposable puncture hollow needle during suture, and the rotator cuff injury is small.

[0006] As an optimization, the upper end of the upward tube-shaped needle head is an inclined cutting tube head needle opening with the opening facing backward. It is convenient for the PDS biodegradable suture to pass through backward.

[0007] As an optimization, the upper part of the upward tube-shaped needle head is bent backward in an arc. It is convenient for the PDS biodegradable suture to be easily observed under arthroscope when passing through the rotator cuff.

[0008] As an optimization, when the end annular upper fixed lip flap sutures the rotator cuff, it presses the rotator cuff tissue downward, which is beneficial for the upward tube-shaped needle head to pass through the rotator cuff tissue.

[0009] As an optimization, the fixed labium on the end ring extends backward along the upper main cross arm of the middle conduction part, and the rear end of the upper main cross arm is connected to a pair of downwardly bent arms distributed at intervals; the rear end of the needle tube-shaped lower movable labium extends backward and then laterally passes through the lower tube cross arm of the middle conduction part in the space between the two downwardly bent arms. The rear ends of the downwardly bent arms and the rear end of the lower tube cross arm extend backward to connect to the rear handle control part. The rear end of the lower tube cross arm is provided with a PDS biodegradable suture inlet communicating with its lumen. The space between the pair of downwardly bent arms provides a moving space for the lower tube cross arm. The rear end of the lower tube cross arm is provided with a PDS biodegradable suture inlet communicating with its lumen. The upper main cross arm and the lower tube cross arm have the function of extending the middle conduction part.

[0010] As an optimization, the upper bent rear end of the lower tube cross arm is hinged to the two downwardly bent arms connected to the upper main cross arm. The rear ends of the two downwardly bent arms extend downward to connect to the downwardly extending main handle, and the upper bent rear end of the lower tube cross arm extends obliquely downward and backward to connect to the obliquely downwardly extending auxiliary handle. A support spring is arranged between the downwardly extending main handle and the obliquely downwardly extending auxiliary handle. The hinging of the upper bent rear end of the lower tube cross arm to the two downwardly bent arms connected to the upper main cross arm is beneficial for the hinged part to occupy less space. The rear ends of the two downwardly bent arms extend downward to connect to the downwardly extending main handle, and the upper bent rear end of the lower tube cross arm extends obliquely downward and backward to connect to the obliquely downwardly extending auxiliary handle, which is convenient for grasping. A support spring is arranged between the downwardly extending main handle and the obliquely downwardly extending auxiliary handle, which is convenient for cleaning and disinfection.

[0011] As an optimization, the upper main cross arm is composed of two side rods arranged in parallel fixedly connected to the U-shaped end ring at the front and a middle top plate fixedly connected to the inner sides of the tops of the two side rods. The lower tube cross arm fits against the lower surface of the middle top plate under the action of the support spring.

[0012] As an optimization, the obliquely downwardly extending auxiliary handle is a U-shaped with an upward opening that extends obliquely downward and backward and then bends upward and forward. It can be suitable for hands of different sizes to grasp.

[0013] As an optimization, the PDS biodegradable suture inlet faces upward. It is convenient to observe when grasping.

[0014] As an optimization, the PDS biodegradable suture inlet faces backward and upward. It is beneficial to reduce the resistance of the PDS biodegradable suture to pass through and is convenient to observe when grasping.

[0015] The advantages of this stapler: Compared with the commonly used rotator cuff stapler with a puncture core in current clinical practice, this stapler does not need to replace the puncture core every time, reducing the use cost. The commonly used stapler with a puncture core in current clinical practice, such as Figure 1As shown, the front end of the puncture core has a risk of fracture. Once fractured, it is very likely that it cannot be removed. This suture device avoids this risk. This rotator cuff suture device overcomes the possible disadvantages of other rotator cuff suture threaders (authorized announcement number CN 214048945 U): ① After the anchor suture (16) on the suture needle (1) passes through the rotator cuff tissue, it clings closely to the side of the suture needle (1) and is not easily hooked by the barb (10) on the wire pulling hook (2), so that the anchor suture (16) cannot effectively pass through the rotator cuff. ② The barb (10) on the wire pulling hook (2) is easily hooked by the fibers of the rotator cuff tissue and cannot be removed. ③ The distance between the widest parts of the upper and lower parts is relatively large, making it difficult to enter the small minimally invasive incision.

[0016] After adopting the above technical solution, the rotator cuff suture device of the present utility model has the advantages that there is no problem of the disposable puncture core needle breaking during suturing, the cost of the puncture core is saved, and the rotator cuff injury is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an existing rotator cuff suture device. Figure 2 is a schematic structural diagram of the rotator cuff suture device of the present utility model. Figure 3 is Figure 2 a partial enlarged schematic view of A of Figure 4 is Figure 2 a partial enlarged schematic view of B of Figure 5 is a schematic view of the usage state of the rotator cuff suture device of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Such as Figure 2-5As shown in the figure, the rotator cuff suture device of the present utility model includes a front suture part, a middle conduction part and a rear handle control part. The front suture part includes an end annular upper fixing lip flap 1 for clamping the rotator cuff tissue and a needle tube-shaped lower movable lip flap 2 that can be controllably closed upward. The front end of the needle tube-shaped lower movable lip flap 2 is connected to an upward tubular needle 21 for passing upward through the end ring of the upper fixing lip flap. The PDS biodegradable suture 3 passes through the needle tube-shaped lower movable lip flap 2 and exits from the upward tubular needle 21. During use, it is inserted into the subacromial space through the lateral approach of the shoulder joint, the upper and lower lip flaps of the suture device are opened, and it is advanced towards the cross-section direction of the rotator cuff. The two lip flaps of the suture device are placed on the upper and lower surfaces of the rotator cuff. The handle is squeezed forcefully. At this time, the puncture needle of the lower lip of the suture device passes through the rotator cuff tissue and exits from the hole of the upper lip. At this time, the PDS line is placed into the small hole in the middle and rear part of the suture device. The PDS line finally exits from the puncture needle hole of the suture part. The PDS line is continuously advanced to make a longer line exposed in the joint cavity. The handle of the rear handle control part that is squeezed is released. Under the action of the reset spring, the upper and lower lips of the suture part are separated, the puncture needle is pulled out from under the rotator cuff, and the suture device is taken out of the wound. At this time, the long PDS line in the joint cavity is brought out of the wound by the annular structure of the upper lip of the suture part. At this time, the PDS line is used as a traction line to bring the tail line of the anchor through the rotator cuff tissue. The same steps can be sutured multiple times. In this way, when suturing, there is neither the problem of the one-time puncture core needle breaking, nor the advantage of small rotator cuff injury.

[0019] Specifically, the upper end of the upward tubular needle 21 is an inclined cutting tube head needle opening with the opening facing backward. When suturing the rotator cuff, the end annular upper fixing lip flap presses the rotator cuff tissue downward. The upper part of the upward tubular needle 21 is bent backward in an arc. More specifically, the upper part of the upward tubular needle 21 is bent backward in an arc, and the upper end of the upper part of the upward tubular needle 21 with the backward arc bending is a vertical cutting tube head needle opening with the opening facing backward.

[0020] Specifically, the end annular upper fixing lip flap 1 is continuously extended backward to the upper main cross arm 12 of the middle conduction part. The rear end of the upper main cross arm 12 is continuously connected to a pair of downward bent arms 13 distributed at intervals. The rear end of the needle tube-shaped lower movable lip flap 2 is continuously connected backward to the lower tube cross arm 22 of the middle conduction part that laterally passes through the space between the two downward bent arms 12. The rear ends of the downward bent arms 13 and the rear end of the lower tube cross arm 22 are continuously connected to the rear handle control part. The rear end of the lower tube cross arm 22 is provided with a PDS biodegradable suture inlet 30 communicating with its lumen. The upper bent rear end of the lower tube cross arm 22 is hinged to the two downward bent arms 13 connected to the upper main cross arm 12. The rear ends of the two downward bent arms 13 are continuously extended downward to the lower main handle 14. The upper bent rear end of the lower tube cross arm 22 extends obliquely downward and outward to the outer oblique lower extension sub-handle 23. A support spring 24 is arranged between the lower main handle 14 and the outer oblique lower extension sub-handle 23. The outer oblique lower extension sub-handle 23 is an upper open U shape that extends obliquely downward and backward and then bends upward and forward. The PDS biodegradable suture 3 inlet faces upward.

[0021] Preferably, the upper main cross arm is composed of two parallel side rods fixedly connected to the U-shaped end ring forward and a middle top plate fixedly connected to the inner sides of the tops of the two side rods. The lower pipe cross arm fits against the lower surface of the middle top plate under the action of the support spring. Preferably, the inlet of the PDS degradable suture faces backward and upward.

[0022] This rotator cuff suture device consists of three parts: a rear handle control part, a middle conduction part, and a front suture part. The handle part is the place where the doctor holds the suture device, and a spring is installed there. After the doctor releases the force, the spring can automatically separate the upper and lower lips of the suture device; the middle conduction part can transfer the force from the handle part to the front suture part, and there is a long and thin hole inside, through which the PDS line can pass; the suture part consists of upper and lower lips. The upper lip is a ring structure, and the lower lip has an upward puncture needle. The inclined surface at the end of the puncture needle faces the handle part. The puncture needle has a hollow structure and communicates with the thin hole of the conduction part.

[0023] During use, it is inserted into the subacromial space through the lateral approach of the shoulder joint. The upper and lower lips of the suture device are opened and advanced towards the cross-section direction of the rotator cuff. The two lips of the suture device are placed on the upper and lower surfaces of the rotator cuff. The handle is squeezed forcefully. At this time, the puncture needle of the lower lip of the suture device penetrates through the rotator cuff tissue and exits from the hole of the upper lip. At this time, the PDS line is inserted into the small hole at the junction of the middle and rear parts of the suture device. The PDS line finally exits from the puncture needle hole of the suture part. The PDS line is continuously advanced to make a longer line exposed in the joint cavity. The squeezed handle is released. Under the action of the spring, the upper and lower lips of the suture part are separated, and the puncture needle is pulled out from under the rotator cuff. The suture device is taken out of the wound. At this time, the long PDS line in the joint cavity is brought out to the outside of the wound by the ring structure of the upper lip of the suture part. At this time, the PDS line serves as a traction line to bring the tail line of the anchor through the rotator cuff tissue. The same steps can be repeated for multiple sutures. In short, the rotator cuff suture device of the present utility model has the advantages that there is neither the problem of the one-time puncture core needle breaking during suture, nor the cost of the puncture core is saved, and the rotator cuff injury is small.

Claims

1. A rotator cuff suture device, comprising a front suture part, a middle conduction part and a rear handle control part, characterized in that The front suture part includes an end-annular upper fixing lip flap for clamping the rotator cuff tissue and a needle-tubular lower movable lip flap for controllable upward alignment; the front end of the needle-tubular lower movable lip flap is communicated with an upward tubular needle head for passing upward through the end ring of the upper fixing lip flap, and the PDS degradable suture passes through the needle-tubular lower movable lip flap and exits from the upward tubular needle head.

2. The rotator cuff suture apparatus according to claim 1, wherein The upper end of the upward tubular needle head is an inclined cutting tube head needle opening with the opening facing backward.

3. The rotator cuff suture apparatus according to claim 1, wherein The upper part of the upward tubular needle head is bent backward in an arc.

4. The rotator cuff suture instrument according to claim 1, wherein When suturing the rotator cuff, the end-annular upper fixing lip flap presses the rotator cuff tissue downward.

5. The rotator cuff suture device according to claim 1, wherein The end-annular upper fixing lip flap extends backward along the upper main transverse arm of the middle conduction part, and the rear end of the upper main transverse arm is connected to a pair of downwardly bent arms distributed at intervals; the rear end of the needle-tubular lower movable lip flap extends backward and then laterally passes through the lower tube transverse arm of the middle conduction part between the two downwardly bent arms, and the rear ends of the downwardly bent arms and the rear end of the lower tube transverse arm extend backward to connect to the rear handle control part. The rear end of the lower tube transverse arm is provided with a PDS degradable suture inlet communicating with its lumen.

6. The rotator cuff suturing apparatus according to claim 5, wherein The upper bent rear end of the lower tube transverse arm is hinged to the two downwardly bent arms connected to the upper main transverse arm. The rear ends of the two downwardly bent arms extend downward to connect to the downwardly extending main handle, and the upper bent rear end of the lower tube transverse arm extends obliquely downward and outward to connect to the obliquely downwardly extending auxiliary handle. A support spring is arranged between the downwardly extending main handle and the obliquely downwardly extending auxiliary handle.

7. The rotator cuff suture apparatus according to claim 6, wherein The upper main transverse arm is composed of two parallel side rods fixedly connected to the U end ring forward and a middle top plate fixedly connected to the inner sides of the tops of the two side rods. The lower tube transverse arm fits against the lower surface of the middle top plate under the action of the support spring.

8. The rotator cuff suture apparatus according to claim 5, characterized in that The obliquely downwardly extending auxiliary handle is an upper-open U shape that extends obliquely backward and downward and then bends upward and forward.

9. The rotator cuff suture apparatus according to claim 5, wherein The PDS degradable suture inlet faces upward.

10. The rotator cuff suture apparatus according to claim 9, wherein The PDS degradable suture inlet faces upward and backward.

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