WO2023173822A1

WO2023173822A1 - Meniscus suturing device

Info

Publication number: WO2023173822A1
Application number: PCT/CN2022/136921
Authority: WO
Inventors: 王靖
Original assignee: 湖南省人民医院
Priority date: 2022-03-18
Filing date: 2022-12-06
Publication date: 2023-09-21
Also published as: CN114587457A; CN114587457B

Abstract

A meniscus suturing device, comprising a grip needle tube (1), a needle (7), and a suture thread (6) fixedly connected to the tail of the needle (7), wherein the suture thread (6) can penetrate the grip needle tube (1) through the front end thereof and can protrude from the grip needle tube through the rear end thereof, the rear end of the needle (7) is in insertion fit with the front end of the grip needle tube (1), the tip of the needle (7) can be exposed when the front end abuts against the rear end, and the front end of the grip needle tube (1) is in the form of a spike when the needle (7) is detached. In the meniscus suturing device, the front end of the grip needle tube (1) is provided with a pointed end structure, so as to be independently pierced into human tissue when the needle (7) is detached, such that full-internal suturing is realized, and the problem of full-internal suturing of the suturing device being inconvenient is effectively solved.

Description

Meniscal suture device

Technical field

The present invention relates to the technical field of surgical instruments, and more specifically, to a meniscus suturing device.

Background technique

A meniscal tear is a break in the half-moon-shaped fibrocartilage within the knee joint. Meniscal tears are mainly caused by torsional forces with the knee in half or full flexion. Meniscectomy or meniscal suturing is often required for large meniscal tears that are ineffective with conservative treatment.

In the past, meniscal sutures were often performed from the inside to the outside, from the outside to the inside, or from the inside to the inside. The inside-out suturing method requires additional incisions at the rear and separation of subcutaneous tissue, thereby increasing trauma and operation time; this technique also requires a trained assistant to pick up the sutures and tie the knots. The outside-in suturing technique does not require a posterior incision, but the operating space is obviously limited when suturing the posterior 1/3 of the meniscus, which increases the difficulty of vertical mattress suturing. The disadvantage of all-internal suturing technology is that it is not very economical. The suturing instruments are disposable medical consumables and are expensive.

To sum up, how to effectively solve the problem of inconvenience in fully internal suturing with a suturing device is an urgent problem that those skilled in the art need to solve.

Contents of the invention

In view of this, the object of the present invention is to provide a meniscal suturing device that can effectively solve the problem of inconvenient suturing of all internal suturing devices.

In order to achieve the above objects, the present invention provides the following technical solutions:

A meniscus suturing device includes a holding needle tube, a needle and a suture fixedly connected to the tail end of the needle. The suture can penetrate from the front end of the holding needle tube and can pass out from the rear end, so The rear end of the needle is plug-fitted with the front end of the holding needle tube and the tip of the needle can be exposed when the front and back are offset. The front end of the holding needle tube is in a spike shape when the needle is detached.

In this meniscus suturing device, when in use, the sutured needle and the suture are inserted into the holding needle tube, and the excess extended suture protrudes from the rear end of the holding needle tube. Insert the assembled suture device from the outside of the patient's knee joint into the lateral edge of the knee joint capsule, the free edge of the damaged meniscus, and the synovial edge of the damaged meniscus in sequence, withdraw the needle tube, and leave the suture in the knee joint. Inside. Only use the holding needle to perforate again 5 mm next to the first perforation site, then pass the suture outward from the hole of the second perforation to the outside of the damaged meniscus, and then tie the suture to complete the suture. In this meniscus suturing device, a tip-type structure is provided at the front end of the holding needle tube, so that when the needle is detached, it can penetrate into the human tissue alone, thereby enabling full internal suturing. To sum up, this meniscal suturing device can effectively solve the problem of inconvenience of full internal suturing of the suturing device.

Preferably, the front end surface of the holding needle tube is a beveled surface so that the front end forms a spike shape.

Preferably, the holding needle tube includes a needle tube and a handle formed at the rear end of the needle tube, and the outside of the handle has a protruding cord-winding portion.

Preferably, at least one of the two front ends of the rope-winding portion forms a rope-locking opening.

Preferably, the rope winding parts are provided on opposite sides of the handle.

Preferably, the inner channel diameter of the holding needle tube is between 0.8 mm and 1 mm, the outer diameter of the needle tube is between 1.1 mm and 1.3 mm, and the length of the handle is between 45 mm and 55 mm. Diameter ranges from 11mm to 13mm.

Preferably, the diameter of the suture is 0.09 mm to 0.11 mm smaller than the diameter of the inner channel of the holding needle tube.

Preferably, the needle includes a rear cylindrical portion matching the inner diameter of the inner channel of the holding needle tube and a front cylindrical portion with an outer diameter larger than the inner diameter of the inner channel of the holding needle tube, and the front cylindrical portion is in contact with the inner diameter of the inner channel of the holding needle tube. A sloped step surface matching the chamfered surface is formed between the rear cylindrical parts, and the front end of the front cylindrical part has a cone.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a needle holding tube provided by an embodiment of the present invention;

Figure 2 is a schematic cross-sectional structural diagram of a needle holding tube provided by an embodiment of the present invention;

Figure 3 is a schematic structural diagram of a wired needle provided by an embodiment of the present invention;

Figure 4 is a schematic structural diagram of a needle provided by an embodiment of the present invention.

The following are marked in the attached drawing:

Hold the needle tube 1, the chamfer 2, the handle 3, the cord wrapping part 4, the cord mouth 5, the suture 6, and the needle 7.

Detailed ways

The embodiment of the present invention discloses a meniscus suturing device to effectively solve the problem of inconvenience of full internal suturing of the suturing device.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Please refer to Figures 1-4. Figure 1 is a schematic structural diagram of a needle-holding tube provided by an embodiment of the present invention; Figure 2 is a schematic cross-sectional structural diagram of a needle-holding tube provided by an embodiment of the present invention; Figure 3 is a schematic structural diagram of a needle-holding tube provided by an embodiment of the present invention. A schematic structural diagram of a needle with a thread; Figure 4 is a schematic structural diagram of a needle provided by an embodiment of the present invention.

In a specific embodiment, this embodiment provides a meniscal suturing device. Specifically, the meniscal suturing device may be a percutaneous meniscal total internal suturing device. The meniscus suturing device includes a holding needle tube 1, a needle 7 and a suture 6.

The tail of the needle 7 is fixedly connected to the suture 6. The specific fixed connection is such as welding, bonding, etc., so that when the needle 7 penetrates the human tissue, it can drive the suture 6 to pass through the human tissue, and then suturing can be performed. The front end of the needle 7 needs to be tip-shaped to ensure penetration into the corresponding tissue of the human body. The diameter and material of the suture 6 are generally set according to the suture requirements and are not limited here. However, it should be ensured that the suture 6 can pass through the front end of the holding needle tube 1 and can pass out from the rear end, that is, the two ends of the holding needle tube 1 are opened, and the internal pipe diameter is not smaller than the suture 6 diameter, and preferably slightly larger than the suture 6 diameter.

The rear end of the needle 7 is plug-fitted with the front end of the holding needle tube 1, and the tip of the needle 7 can be exposed when the front and rear are against each other. So that when in use, the suture 6 is inserted into the pipe of the holding needle tube 1, and the tail end part needs to protrude from the tail end of the holding needle tube 1, and at the front end of the holding needle tube 1, the rear end of the needle 7 Insert it into the holding needle tube 1 until a front-to-back resistance is formed, and at this time, the tip of the needle 7 remains exposed. During use, the suture 6 can be tightened at the rear end of the holding needle tube 1 to prevent the needle 7 from being separated from the holding needle tube 1 . Then align the tip of the needle 7 with the human tissue, and by applying force to the holding needle tube 1, the holding needle tube 1 can transmit the thrust to the needle 7 to push the needle 7 to penetrate into the human tissue.

Moreover, the front end of the holding needle tube 1 is in a spiked shape when the needle 7 is detached, so that when the needle 7 is detached from the holding needle tube 1, the spiked structure of the front end of the holding needle tube 1 can penetrate into human tissue without having to use the needle. 7 cutting-edge structure. The sharp structure at the front end of the needle tube should be able to guide the holding needle tube 1 to penetrate into human tissue. For example, it can be in a triangular shape. In order to facilitate the installation, it is preferred that the front end surface of the holding needle tube 1 is a beveled surface 2 so that the front end forms a spike shape, and the beveled surface 2 refers to a section formed by cutting along an oblique direction to the holding needle tube 1, such as a cylinder. , the blade is set obliquely relative to the axis of the cylinder, rather than vertically or parallelly, and then cut off to form an oblique blade surface, thereby forming a tip knot. This structure can refer to the structure of the injection needle needle 7 .

In this meniscus suturing device, during use, the needle 7 and the suture 6 with the suture 6 are inserted into the holding needle tube 1 , and the excess suture 6 protrudes from the rear end of the holding needle tube 1 . Insert the assembled suture device from the outside of the patient's knee joint into the lateral edge of the knee joint capsule, the free edge of the damaged meniscus, and the synovial edge of the damaged meniscus in sequence, withdraw the holding needle tube 1, and leave the suture 6 in Within the knee joint. Only use the needle 1 to perforate again 5 mm next to the first perforation position, and then use suture 6 to pass through the outer side of the damaged meniscus from the second perforation hole, and then tie the suture 6 to complete. Stitch. In this meniscus suturing device, a tip-type structure is provided at the front end of the holding needle tube 1, so that when the needle 7 is detached, it can penetrate into the human tissue alone, thereby enabling full internal suturing. To sum up, this meniscal suturing device can effectively solve the problem of inconvenience of full internal suturing of the suturing device.

Furthermore, in order to facilitate the operation, the needle tube 1 is generally held with the needle tube and the handle 3 as a pillow. The needle tube and the handle 3 can be integrally formed or can be assembled and installed later. The needle tube and the handle 3 are preferably both titanium alloy parts. Of course, It can also be plastic parts, steel parts, etc.

Furthermore, in order to ensure that the position of the needle 7 is stable after being inserted into the front end of the holding needle tube 1, it is preferred that the outside of the handle 3 has a protruding rope portion 4, so that the needle 7 can be exposed from the rear end of the holding needle tube 1. The suture 6 can be wound around the cord-winding portion 4 to ensure that the suture 6 is in a tight state, thereby preventing the needle 7 from detaching. In order to better keep the suture 6 in its current state, it is preferable that at least one of the two front ends of the rope wrapping portion 4 is formed with a rope blocking opening 5 . The rope clamping opening 5 is generally a V-shaped opening to ensure that the suture 6 can be stuck therein, thereby preventing the suture 6 from detaching.

The structure of the rope-winding part 4 can be set as needed to facilitate the rope-roping. Specifically, the rope-winding portion 4 can include a long strip portion extending front and back. One side of the long strip portion is connected to the outside of the handle 3 and the other side forms a crown portion to prevent the suture 6 wound around the long strip portion from detaching. Long section. The crown part may be further provided with the above-mentioned rope clamping port 5 . In order to facilitate operation, it is preferred that the rope-winding portions 4 are provided on opposite sides of the handle 3. In this case, the two rope-winding portions 4 can be used as limiting portions for applying force by the hand.

Specifically, the inner channel diameter of the holding needle tube 1 is preferably between 0.8 mm and 1 mm. For example, the inner channel diameter can be 0.9 mm, and the outer diameter of the needle tube is preferably between 1.1 mm and 1.3 mm. And the preselection is 1.2 mm. The length of the handle 3 is preferably between 45 mm and 55 mm, and preferably 50 mm, and the outer diameter of the handle 3 is preferably between 11 mm and 13 mm, and preferably 12 mm. The length of the winding portion is preferably between 16 mm and 18 mm, for example, it can be 17 mm.

The diameter of the suture 6 is preferably 0.09 mm to 0.11 mm smaller than the inner channel diameter of the holding needle tube 1, and is preferably smaller than 0.1 mm. For example, the diameter of the suture 6 can be 0.8 mm. The length of the needle 7 is preferably between 5.3 mm and 5.5 mm, for example, it can be 5.4 mm.

The needle 7 is arranged in conjunction with the front end of the holding needle tube 1 . For example, the front end surface of the holding needle tube 1 is a beveled surface 2, and the inclination angle of the beveled surface 2 relative to the axis of the needle tube is preferably between 55 degrees and 65 degrees, and is preferably an angle of 60 degrees. Correspondingly, the needle 7 can include a rear cylindrical portion matching the inner diameter of the inner channel of the holding needle tube 1 and a front cylindrical portion with an outer diameter larger than the inner diameter of the inner channel of the holding needle tube 1. The front cylindrical portion A sloped step surface matching the chamfered surface 2 is formed between the rear cylindrical portion and the front cylindrical portion. The front end of the front cylindrical portion has a cone.

Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on its differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be practiced in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

A meniscus suturing device, characterized in that it includes a holding needle tube, a needle and a suture fixedly connected to the tail end of the needle, and the suture can be penetrated from the front end of the holding needle tube and can be inserted from the rear end. The rear end of the needle is inserted into and matched with the front end of the holding needle tube and the tip of the needle can be exposed when the front and back are against each other. The front end of the holding needle tube is in a spiked shape when the needle is detached.
The meniscus suturing device according to claim 1, wherein the front end surface of the holding needle tube is a beveled surface so that the front end forms a spike shape.
The meniscus suturing device according to claim 2, wherein the holding needle tube includes a needle tube and a handle formed at the rear end of the needle tube, and the outside of the handle has a protruding cord-winding portion.
The meniscus suturing device according to claim 3, wherein at least one of the two front ends of the cord-winding portion forms a cord-locking port.
The meniscus suturing device according to claim 4, wherein the rope-winding portion is provided on opposite sides of the handle.
The meniscus suturing device according to any one of claims 3 to 5, characterized in that the inner channel diameter of the holding needle tube is between 0.8 mm and 1 mm, and the outer diameter of the needle tube is between 1.1 mm and 1.3 mm. The length of the handle is between 45 mm and 55 mm, and the outer diameter is between 11 mm and 13 mm.
The meniscus suturing device according to claim 6, wherein the diameter of the suture is 0.09 mm to 0.11 mm smaller than the diameter of the inner channel of the holding needle tube.
The meniscus suturing device according to claim 6, wherein the needle includes a rear cylindrical portion that matches the inner diameter of the inner channel of the holding needle tube and an outer diameter that is larger than the inner diameter of the inner channel of the holding needle tube. The front cylindrical part has an inclined step surface matching the oblique cut surface formed between the front cylindrical part and the rear cylindrical part, and the front end of the front cylindrical part has a cone.