CN114587457B

CN114587457B - Meniscus stitching instrument

Info

Publication number: CN114587457B
Application number: CN202210270156.6A
Authority: CN
Inventors: 王靖
Original assignee: Hunan Provincial Peoples Hospital
Current assignee: Hunan Provincial Peoples Hospital
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2023-09-19
Anticipated expiration: 2042-03-18
Also published as: WO2023173822A1; CN114587457A

Abstract

The invention discloses a meniscus suture device which comprises a holding needle tube, a needle head and a suture fixedly connected with the tail part of the needle head, wherein the suture can penetrate from the front end of the holding needle tube and can penetrate from the rear end of the holding needle tube, the rear end of the needle head is in plug-in fit with the front end of the holding needle tube, the tip of the needle head can be exposed when the front end and the rear end of the holding needle tube are propped against each other, and the front end of the holding needle tube is in a spike shape when the needle head is separated. In the meniscus suture instrument, the front end of the holding needle tube is provided with the tip-type structure, so that when the needle head is separated, the needle head can be independently penetrated into human tissues, and then the total internal suture can be realized. In summary, the meniscus suture device can effectively solve the problem of inconvenient total internal suture of the suture device.

Description

Meniscus stitching instrument

Technical Field

The invention relates to the technical field of surgical instruments, in particular to a meniscus suture instrument.

Background

Meniscal tears refer to the rupture of the meniscus fibrocartilage within the knee. Meniscal tears are mainly caused by torsional forces in the semi-flexed or fully flexed position of the knee. Meniscectomy or meniscectomy is often required for a conservative treatment ineffective or large meniscelacerations.

Previous meniscal sutures have often employed either inside-out, outside-in or total-in suturing. The inside-out suture requires additional incision at the back and separation of subcutaneous tissue, thereby increasing trauma and surgical time; the technique also requires a trained assistant to take the knot. The outside-in suturing technique does not require a posterior incision, but is significantly limited in space to operate when suturing 1/3 of the posterior meniscal, increasing the difficulty of vertical mattress suturing. The disadvantage of the total internal suturing technique is that the economy is not high, the suturing apparatus is a disposable medical consumable, and the cost is high.

In summary, how to effectively solve the problem of inconvenient total internal suturing of the suturing device is a problem that needs to be solved by those skilled in the art.

Disclosure of Invention

Accordingly, the present invention is directed to a meniscus suture device that can effectively solve the problem of inconvenient total internal suturing.

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

the utility model provides a meniscus suture ware, includes holding needle tubing, syringe needle and with syringe needle afterbody fixed connection's suture, the suture can follow the front end of holding the needle tubing penetrates and from can wearing out from the rear end, the syringe needle rear end with hold needle tubing front end grafting cooperation and when offset around the syringe needle pointed end can expose, the front end of holding the needle tubing is sharp thorn formula when the syringe needle breaks away from.

In this meniscus suture device, in use, a needle with a suture and the suture are inserted into the holding needle tube, and the excess suture is extended from the rear end of the holding needle tube. The assembled stitching instrument sequentially penetrates the outer side edge of the knee joint capsule, the free edge of the damaged meniscus and the synovial edge of the damaged meniscus from the outer side needle of the knee joint of the patient, and the stitching instrument is withdrawn from the holding needle tube, so that the stitching instrument is still remained in the knee joint. The suture was completed by re-perforating the needle tube 5 mm past the first perforation with a hand held needle tube and then knotting the suture after passing the suture outwardly from the tunnel at the second perforation to the outside of the broken meniscus. In the meniscus suture instrument, the front end of the holding needle tube is provided with the tip-type structure, so that when the needle head is separated, the needle head can be independently penetrated into human tissues, and then the total internal suture can be realized. In summary, the meniscus suture device can effectively solve the problem of inconvenient total internal suture of the suture device.

Preferably, the front end face of the holding needle tube is a chamfer so that the front end forms a spike.

Preferably, the holding needle tube comprises a needle tube and a handle part formed at the rear end of the needle tube, and the outer side of the handle part is provided with a convexly arranged rope winding part.

Preferably, at least one of the two ends of the front end of the rope winding part forms a rope clamping opening.

Preferably, the rope winding part is arranged on two opposite sides of the handle part.

Preferably, the grip needle tube has an inner channel diameter of between 0.8 mm and 1 mm, an outer diameter of between 1.1 mm and 1.3 mm, a handle length of between 45 mm and 55 mm, and an outer diameter of between 11 mm and 13 mm.

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

Preferably, the needle head comprises a rear section cylinder part matched with the inner diameter of the holding needle tube inner channel and a front section cylinder part with the outer diameter larger than the inner diameter of the holding needle tube inner channel, an inclined bench surface matched with the inclined section is formed between the front section cylinder part and the rear section cylinder part, and the front end of the front section cylinder part is provided with a cone.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a holding syringe according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a hand-held needle tube according to an embodiment of the present invention;

FIG. 3 is a schematic view of a needle with a wire according to an embodiment of the present invention;

fig. 4 is a schematic view of a needle according to an embodiment of the present invention.

The figures are marked as follows:

the needle tube 1, the bevel 2, the handle 3, the rope winding part 4, the rope clamping opening 5, the suture 6 and the needle 7 are held.

Detailed Description

The embodiment of the invention discloses a meniscus suture device, which is used for effectively solving the problem of inconvenient total internal suture of the suture device.

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 4, fig. 1 is a schematic structural view of a holding needle tube according to an embodiment of the present invention; FIG. 2 is a schematic cross-sectional view of a hand-held needle tube according to an embodiment of the present invention; FIG. 3 is a schematic view of a needle with a wire according to an embodiment of the present invention; fig. 4 is a schematic view of a needle according to an embodiment of the present invention.

In one embodiment, the present embodiment provides a meniscus stapler, which may be a percutaneous meniscus total internal stapler. The meniscus suture device comprises a holding needle tube 1, a needle 7 and a suture 6.

The tail of the needle 7 is fixedly connected with the suture 6, and the tail of the needle 7 is particularly fixedly connected with the suture 6, such as welding, bonding and the like, so that the suture 6 can be driven to penetrate through human tissues when the needle 7 penetrates through the human tissues, and then the suture can be performed. Wherein the front end of the needle 7 needs to be pointed to ensure penetration into the corresponding tissue of the human body. The diameter, material, etc. of the suture 6 are generally set correspondingly according to the suturing requirement, and are not limited herein. It should be ensured that the suture 6 can be threaded from the front end of the holding needle cannula 1 and can be threaded from the rear end, i.e. the holding needle cannula 1 is open at both ends and the inner tube diameter is not smaller than the diameter of the suture 6 and preferably slightly larger than the diameter of the suture 6.

Wherein the back end of the needle 7 is in plug-in fit with the front end of the holding needle tube 1, and the tip of the needle 7 can be exposed when the needle is propped against the front and the back. So that in use the suture 6 is threaded into the canal of the holding needle cannula 1 and the tail end portion needs to protrude from the tail end of the holding needle cannula 1, whereas at the front end of the holding needle cannula 1 the rear end of the needle 7 is inserted into the holding needle cannula 1 until a back-and-forth abutment is created, at which time the tip of the needle 7 remains exposed. In use, the suture 6 may be pulled tight at the rear end of the needle cannula 1 to prevent the needle 7 from being removed from the needle cannula 1. The tip of the needle 7 is then aligned with the body tissue and by applying force to the handle needle cannula 1, the handle needle cannula 1 can transmit a pushing force to the needle 7 to push the needle 7 into the body tissue.

And the front end of the holding needle tube 1 is in a spike shape when the needle 7 is separated, so that the front end spike structure of the holding needle tube 1 can penetrate into human tissues when the needle 7 is separated from the holding needle tube 1, and the tip structure of the needle 7 is not needed. Wherein, the front end spike structure of the needle tube is in order to guide the holding needle tube 1 to penetrate into human tissues, for example, the needle tube can be triangular. For convenience of arrangement, the front end face of the holding needle tube 1 is preferably a bevel face 2 so that the front end forms a spike, and the bevel face 2 refers to a bevel face formed by cutting in an oblique direction to the holding needle tube 1, such as a cylinder, so that the cutting edge is obliquely arranged relative to the axis of the cylinder, rather than being perpendicular or parallel, and then is cut off to form a bevel face, thereby forming a tip knot, and this structure can refer to the structure of the needle 7 of the injection needle.

In this meniscus suture device, in use, the needle 7 with the suture thread 6 and the suture thread 6 are inserted into the holding needle tube 1, and the excess suture thread 6 protrudes from the rear end of the holding needle tube 1. The assembled suture device is sequentially inserted into the outer side edge of the knee joint capsule, the free edge of the damaged meniscus and the synovial edge of the damaged meniscus from the outer side needle of the knee joint of the patient, the holding needle tube 1 is withdrawn, and the suture 6 is still left in the knee joint. The suture 6 was tied to complete suturing after being perforated again 5 mm past the first perforation with the needle cannula 1 only held and then passed outwardly from the tunnel at the second perforation through the outside of the broken meniscus with the suture 6. In this meniscus suture instrument, a tip structure is provided at the front end of the holding needle tube 1 therein so that the needle 7 can be independently penetrated into the human tissue when it is detached, thereby allowing total internal suturing. In summary, the meniscus suture device can effectively solve the problem of inconvenient total internal suture of the suture device.

Further, for convenience of operation, the needle tube 1 is generally held to hold the needle tube and the handle 3, wherein the needle tube and the handle 3 can be integrally formed or assembled and installed later, and the needle tube and the handle 3 are preferably titanium alloy pieces, and can be plastic pieces, steel pieces and the like.

Further, in order to ensure that the needle 7 is inserted into the front end of the holding needle tube 1, the needle can ensure stable position, and the outside of the handle 3 is preferably provided with a rope winding part 4 protruding, so that the suture 6 exposed from the rear end of the holding needle tube 1 can be wound on the rope winding part 4 to ensure that the suture 6 is in a tensioned state, and further the needle 7 is prevented from being separated. In order to better keep the suture 6 in the current state, it is preferable here that at least one of both ends of the front end of the rope winding portion 4 is formed with a rope catching opening 5. The rope clamping opening 5 is a V-shaped opening so as to ensure that the suture 6 can be clamped into the opening, and further prevent the suture 6 from being separated.

Wherein the structure of the rope winding part 4 can be set according to the requirement so as to be convenient for winding ropes. In particular, the roping 4 can be made to comprise a longitudinal strip extending back and forth, one side of the strip being connected to the outside of the handle 3, the other side forming a crown to prevent the stitches 6 wound on the strip from coming off the strip. Wherein the crown part can be further provided with the rope clamping opening 5. For convenience of operation, it is preferable that the rope winding portions 4 are provided on opposite sides of the handle portion 3, and in this case, the two rope winding portions 4 may serve as a hand-biasing limiting portion.

In particular, the diameter of the inner passage of the holding needle cannula 1 is preferably between 0.8 mm and 1 mm, for example, the diameter of the inner passage can be made to be 0.9 mm, and the outer diameter of the needle cannula is preferably between 1.1 mm and 1.3 mm, and preselected to be 1.2 mm. And the length of the shank 3 is preferably between 45 and 55 mm, and preferably 50 mm, while the outer diameter of the shank 3 is preferably between 11 and 13 mm, and preferably 12 mm. Wherein the length of the windings is preferably between 16 and 18 mm, such as may be 17 mm.

Wherein the suture 6 diameter is preferably 0.09 mm to 0.11 mm smaller than the diameter of the channel in the holding needle cannula 1, and preferably 0.1 mm smaller, e.g. wherein the suture 6 diameter may be made 0.8 mm. Wherein the needle 7 preferably has a length of between 5.3 mm and 5.5 mm, such as may be 5.4 mm.

Wherein the needle 7 is arranged in cooperation with the front end of the holding needle tube 1. Such as where the front face of the grip needle cannula 1 is a chamfer 2, wherein the chamfer 2 is preferably inclined at an angle of between 55 and 65 degrees, and preferably 60 degrees, relative to the axis of the cannula. Correspondingly, the needle 7 can comprise a rear section cylindrical part matched with the inner diameter of the inner channel of the holding needle tube 1 and a front section cylindrical part with the outer diameter larger than the inner diameter of the inner channel of the holding needle tube 1, an inclined step surface matched with the inclined section 2 is formed between the front section cylindrical part and the rear section cylindrical part, and the front end of the front section cylindrical part is provided with a cone.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The previous description of the disclosed embodiments is provided to enable any person 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 applied to 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

1. The meniscus stitching instrument is characterized by comprising a holding needle tube, a needle head and a suture fixedly connected with the tail part of the needle head, wherein the suture can penetrate from the front end of the holding needle tube and can penetrate from the rear end of the holding needle tube, the rear end of the needle head is in plug-in fit with the front end of the holding needle tube and can be exposed when the front end and the rear end of the holding needle tube are propped against each other, and the front end of the holding needle tube is in a spike shape when the needle head is separated; the front end face of the holding needle tube is a bevel so that a spike is formed at the front end; the holding needle tube comprises a needle tube and a handle part formed at the rear end of the needle tube, and a rope winding part which is arranged in a protruding manner is arranged on the outer side of the handle part; the diameter of the inner channel of the holding needle tube is between 0.8 and 1 millimeter, the outer diameter of the needle tube is between 1.1 and 1.3 millimeters, the length of the handle is between 45 and 55 millimeters, and the outer diameter of the handle is between 11 and 13 millimeters; the needle head comprises a rear section cylinder part matched with the inner diameter of the inner channel of the holding needle tube and a front section cylinder part with the outer diameter larger than the inner diameter of the inner channel of the holding needle tube, an inclined bench surface matched with the inclined tangent plane is formed between the front section cylinder part and the rear section cylinder part, and the front end of the front section cylinder part is provided with a cone.

2. The meniscus suture apparatus of claim 1, wherein at least one of the front ends of the string-winding portion forms a string-clamping port.

3. The meniscus suture apparatus of claim 2, wherein the handle portion is provided with the roping portions on opposite sides.

4. The meniscus stapler of any one of claims 1-3, wherein the suture diameter is 0.09 mm to 0.11 mm smaller than the grip needle tube inner channel diameter.