CN218961111U - Suture needle - Google Patents

Abstract

The utility model belongs to the field of medical instruments, and provides a suture needle which comprises a needle body and a handle; the front end of the needle body is a needle point, and the needle hole is arranged at the rear end close to the needle point; the rear end of the needle body is provided with a bend, and the value of the angle alpha of the bend is more than or equal to 135 degrees and less than or equal to 150 degrees; the front end of the handle is connected with the rear end of the needle body. The suture needle provided by the utility model is very suitable for large-scale iris separation and other surgeries involving intraocular iris tissue suture, a mode that a traditional needle holder clamps a common suture needle is abandoned, the degree of control of an instrument by an operator is increased, the stability of operation in an anterior chamber is increased, secondary damage to iris tissues and disturbance to surrounding tissues are reduced, the surgery time is shortened, and the surgery efficiency is improved; and meanwhile, the frequency of the instrument entering and exiting the anterior chamber can be reduced, and the risk of postoperative endophthalmitis is reduced.

Description

Suture needle

Technical Field

The utility model belongs to the field of medical instruments, and particularly relates to a suture needle.

Background

Iris tissue damage often occurs in complex injuries of the eyeball, and can be represented by separation of the root of the iris, tearing of the sphincter of the iris, and the like. After the iris is damaged, the problems of large pupil, double pupils, even multiple pupils and the like are caused, so that the light rays enter the path of the eye. The most commonly used needle for suturing iris tissues at present is a suture needle with a thread, the tail of the needle is inlaid with a non-absorbable polypropylene suture, the needle body is linear or arc-shaped, and the length of the needle body is generally 12mm-16mm different. Since the anterior chamber space in the eye is airtight and narrow, the iris tissue is very fragile, and there are several problems and disadvantages in suturing the iris tissue in the anterior chamber: 1. the suture needle of the type needs to be clamped by the needle holder, and as the needle holder cannot enter the anterior chamber, the needle holder often has slipping phenomenon outside the anterior chamber after the needle body enters the anterior chamber, and the suture needle cannot be firmly controlled; 2. when the iris separation range is large or the pupil sphincter injury range is large, repeated suturing is needed, and as the suture of the type of suture needle is fixed at the tail part, the needle body passes through iris tissues for multiple times, so that the injury of the iris tissues is aggravated; 3. for aseptically demanding procedures, repeated access of the needle to the anterior chamber increases the likelihood of entry of the ocular surface flora into the anterior chamber, thus exacerbating the risk of post-operative inflammatory reactions and endophthalmitis.

Disclosure of Invention

In order to solve at least one of the above problems in the prior art, the present utility model provides a suture needle including a needle body and a handle;

the front end of the needle body is a needle point, and the needle hole is arranged at the rear end close to the needle point;

the rear end of the needle body is provided with a bend, and the value of the angle alpha of the bend is more than or equal to 135 degrees and less than or equal to 150 degrees;

the front end of the handle is connected with the rear end of the needle body.

The suture needle provided by the utility model is very suitable for large-scale iris separation and other surgeries involving intraocular iris tissue suture, a mode that a traditional needle holder clamps a common suture needle is abandoned, the degree of control of an instrument by an operator is increased, the stability of operation in an anterior chamber is increased, secondary damage to iris tissues and disturbance to surrounding tissues are reduced, the surgery time is shortened, and the surgery efficiency is improved; and meanwhile, the frequency of the instrument entering and exiting the anterior chamber can be reduced, and the risk of postoperative endophthalmitis is reduced.

Drawings

FIG. 1 is a schematic view of a suture needle according to a preferred embodiment of the present utility model.

Fig. 2 is an enlarged schematic view of the needle tip and needle hole portion of the suture needle according to the preferred embodiment of the present utility model.

FIG. 3 is a schematic view showing a hand-held and threaded suture needle according to a preferred embodiment of the present utility model.

Fig. 4 is a reference schematic diagram showing the use state of the suture needle when the root of the iris is sutured away according to the preferred embodiment of the present utility model.

Reference numerals in the drawings are explained as follows:

1-needle body, 2-handle, 11-needle tip, 12-needle hole.

Detailed Description

In order to make the technical solution, objects and advantages of the present utility model more apparent, the present utility model will be described in further detail by means of specific examples of embodiments with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. For the electrical and communication fields, either a wired connection or a wireless connection is possible. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in FIG. 1, an embodiment of the present utility model provides a suturing needle that is particularly suited for suturing of iris tissue within an eye.

As shown in fig. 1, an embodiment of the present utility model provides a suture needle including a needle body 1 and a handle 2.

As shown in fig. 1 and 2, the front end of the needle body 1 is a needle tip 11. Pinhole 12 is located immediately behind needle tip 11 (i.e., toward the end of handle 2. In the present utility model, the left side is defined as "front" and the right side is defined as "rear", unless otherwise specified, with reference to the orientation of fig. 1). The pinhole 12 may have a pore size of 0.1-0.3mm, preferably 0.2mm; a 0.2mm aperture accommodates 5/0-10/0 polypropylene suture free passage. The top end of the needle point 11 is a pointed end; from the tip to the rear end of the pinhole 12, the two opposite sides are flat (the cross section is similar to a trapezoid or a trapezoid structure, namely, the upper bottom and the lower bottom of the trapezoid are straight lines, and the two waists are arc-shaped or straight lines); the structure can not only facilitate processing the needle hole 12, but also reduce the damage to the tissue when the needle tip passes through the tissue in use and reduce the expanding action on the incision, thereby being beneficial to closing the incision. The cross section of the needle body 1 at the rear end of the needle hole 12 is circular, and the circumference of the cross section gradually increases from one end close to the needle hole 12 to one end close to the handle 2 (i.e., the needle body 1 gradually increases from the front end to the rear end starting from the rear end of the needle hole 12). The length of the needle body 1 at the rear end of the needle hole 12 is 10-20mm, preferably 15mm. The rear end of the needle body 1 is provided with a bending, and the angle alpha of the bending is 135 degrees or more and less than or equal to 150 degrees.

As shown in fig. 1, the front end of the handle 2 is connected to the rear end of the needle body 1. The length of the handle 2 may be 8-15cm, preferably 10cm. In one embodiment, the front end of the handle 2 is detachably connected with the rear end of the needle body 1, for example by a threaded connection; the detachable connection mode can replace the needle body 1 or the handle 2 at any time according to the needs, so that the transportation and the storage are convenient, and when the needle body 1 or the handle 2 is damaged, the whole suture needle is not required to be abandoned, only the damaged part is required to be replaced, so that the cost is saved. Of course, in order to make the structure of the whole suture needle more stable and reduce the operation error, the front end of the handle 2 and the rear end of the needle body 1 may be fixedly connected or be in an integrated structure.

The front end of the handle 2 tapers until the ratio of the diameter of the handle 2 to the diameter of the rear end of the needle 1 reaches 0.9-1.1 (i.e. the same or close). The middle section of the handle 2 is provided with patterns (such as threads), or the middle section of the handle 2 is provided with an anti-skid coating, so that an operator can conveniently hold the handle in the middle of the handle (as shown in figure 3) to increase friction force and prevent skid; the middle section of the handle 2 is cylindrical and the diameter of the cross section can be 4-6mm, preferably 5mm. The rear section of the handle 2 can be a cylinder, and the diameter of the cross section is smaller than that of the middle section of the handle 2; thus, the operation staff can conveniently use the device, and the operation error is reduced.

Both the needle body 1 and the handle 2 can be made of titanium alloy. The titanium alloy has the characteristics of high temperature and high pressure resistance, oxygen resistance, ageing resistance, difficult corrosion and difficult deformation, can be used for high temperature and high pressure disinfection, and has low cost and good quality.

The present utility model will be described in detail with reference to the accompanying drawings.

The following describes the specific use of the suture needle according to the present utility model with reference to fig. 1 to 4, taking an iris root cleavage operation as an example:

a non-penetrating half-scleral tunnel is formed at the same side of the iris separation at a distance of 1mm from the scleral edge for standby, a 1.5mm transparent cornea incision is formed at the opposite side of the iris separation at the scleral edge, and a viscoelastic agent is injected into the anterior chamber to maintain the anterior chamber.

The 9/0 polypropylene suture was then passed through the needle hole 12 of the suture needle provided by the present utility model for use (as shown in fig. 3).

The suture needle was held, a 1.5mm transparent corneal incision was made into the anterior chamber from the opposite side of the severed iris, passed over the pupillary region, passed through the iris root tissue from the severed end, then passed out of the corresponding scleral tunnel, pulled out of the suture, back into the anterior chamber, and the previous procedure was repeated to perform a continuous mattress suture on the severed iris root tissue (as shown in fig. 4).

After the suturing, the two ends of the suture positioned outside the eyes are knotted, the knot is buried in the scleral tunnel, and the bulbar conjunctiva is sutured.

The suture needle provided by the utility model is very suitable for large-scale iris separation and other surgeries involving intraocular iris tissue suture, a mode that a traditional needle holder clamps a common suture needle is abandoned, the stability of operation in the anterior chamber is improved, secondary damage to iris tissues and disturbance to surrounding tissues are reduced, the surgery time is shortened, and the surgery efficiency is improved; and meanwhile, the frequency of the instrument entering and exiting the anterior chamber can be reduced, and the risk of postoperative endophthalmitis is reduced.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A suture needle, characterized in that:

the suture needle comprises a needle body and a handle;

the front end of the needle body is a needle point, and the needle hole is arranged at the rear end close to the needle point;

the rear end of the needle body is provided with a bend, and the value of the angle alpha of the bend is more than or equal to 135 degrees and less than or equal to 150 degrees;

the front end of the handle is connected with the rear end of the needle body.

2. The suturing needle of claim 1, wherein:

the top end of the needle point is a pointed end;

the two opposite sides from the tip to the rear end of the needle hole are flat.

3. The suturing needle of claim 2, wherein:

the cross section of the needle body at the rear end of the needle hole is round, and the circumference of the cross section gradually increases from one end close to the needle hole to one end close to the handle.

4. A suturing needle according to claim 3, wherein:

the front end of the handle is detachably connected with the rear end of the needle body.

5. The suturing needle of claim 4, wherein:

the front end of the handle is connected with the rear end of the needle body through threads.

6. The suturing needle of claim 5, wherein:

the front end of the handle is fixedly connected with the rear end of the needle body, or:

the front end of the handle and the rear end of the needle body are in an integrated structure.

7. The suturing needle of claim 6, wherein:

the front end of the handle tapers until the ratio of the diameter of the handle to the diameter of the rear end of the needle reaches 0.9-1.1.

8. The suturing needle of claim 7, wherein:

the middle section of the handle is provided with patterns; or:

the middle section of the handle is provided with an anti-slip coating.

9. The suturing needle of claim 8, wherein:

the length of the needle body at the rear end of the needle hole is 10-20mm;

the aperture of the pinhole is 0.1-0.3mm;

the length of the handle is 8-15cm;

the middle section of the handle is a cylinder, and the diameter of the cross section is 4-6mm;

the rear section of the handle is a cylinder, and the diameter of the cross section is smaller than that of the middle section of the handle.

10. The suturing needle of claim 9, wherein:

the length of the needle body at the rear end of the needle hole is 15mm;

the aperture of the pinhole is 0.2mm;

the length of the handle is 10cm;

the middle section of the handle is a cylinder, and the diameter of the cross section is 5mm.

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