CN215606823U

CN215606823U - Puncture knife

Info

Publication number: CN215606823U
Application number: CN202121420967.7U
Authority: CN
Inventors: 汤国兵; 阚敏; 王琰
Original assignee: Suzhou Langmu Medical Technology Co ltd
Current assignee: Suzhou Langmu Medical Technology Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2022-01-25
Anticipated expiration: 2031-06-24

Abstract

The utility model provides a puncture knife, be used for carrying out glaucoma operation, puncture knife includes handle of a knife and cutter body, the handle of a knife is including being cylindrical main part and connecting and being conical portion of gripping in main part one end, main part and the integrated into one piece of portion of gripping, the one end that the main part kept away from the portion of gripping is equipped with the breach, be used for preventing puncture knife roll or package bayonet when the operation, the cutter body includes connecting portion and tool bit portion, connecting portion and the one end of the main part of gripping is kept away from is connected, the central line of connecting portion and the coincidence of the central line of handle of a knife, tool bit portion includes the tool bit body, the tool bit body has relative first side and second side, first side and second side extend along the vertical central plane of tool bit body at the bottom and intersect formation cutting edge, the cutting edge forms 30-45 contained angle with the front side of tool bit body. The application provides a puncture sword, this cutter can enough open the scleral flap and can peel off the scleral flap, at the operation in-process, convenient to use, and operating efficiency is high.

Description

Puncture knife

Technical Field

The application relates to the technical field of medical equipment, in particular to a puncture knife.

Background

Glaucoma (glaucoma) is a group of diseases characterized by atrophy and depression of the optic papilla, visual field loss and visual deterioration, pathological increased intraocular pressure and insufficient blood supply to the optic nerve are primary risk factors of the onset of the glaucoma, and the tolerance of the optic nerve to pressure damage is also related to the occurrence and development of the glaucoma. Obstruction of any ring in the aqueous humor circulatory pathway can lead to pathological changes caused by elevated intraocular pressure, but some patients also present with normal tension glaucoma. Glaucoma is one of three major blinding diseases causing blindness in humans, with a total incidence of 1% and 2% after age 45. Clinically, glaucoma is classified into three major categories, primary, secondary and congenital, according to etiology, angle of the atrium, tonography and the like.

In the existing glaucoma operation, a scleral flap needs to be deeply cut and stripped, but the existing cutter only has a single function, and if the functions of cutting and stripping need to be realized, different cutters need to be used in combination.

SUMMERY OF THE UTILITY MODEL

The application provides a puncture knife to solve the problem of knife function singleness among the prior art.

In order to solve the technical problem, the application adopts a technical scheme that: the utility model provides a puncture knife, be used for carrying out glaucoma operation, puncture knife includes handle of a knife and cutter body, the handle of a knife is including being cylindrical main part and connecting and be conical portion of gripping in main part one end, main part and the integrated into one piece of gripping, the one end that the main part kept away from the portion of gripping is equipped with the breach, be used for preventing puncture knife roll or package bayonet socket when the operation, the cutter body includes connecting portion and sword head portion, connecting portion and the one end of the main part of gripping keeping away from is connected, the central line of connecting portion and the coincidence of the central line of handle of a knife, sword head portion includes the tool bit body, the tool bit body has relative first side and second side, first side and second side extend along the vertical central plane of tool bit body at the bottom and intersect formation cutting edge, the cutting edge forms 30-45 contained angle with the front side of tool bit body.

Wherein, the thickness of the tool bit body is 0.08-0.3 mm.

Wherein, the first side and/or the second side are provided with marking lines for marking the depth.

Wherein the marking line is formed by laser engraving, laser printing, silk-screen printing or machining.

Wherein, the cutter head part and the connecting part are integrally formed.

The beneficial effect of this application is: be different from prior art's condition, this application provides a puncture sword, and this cutter can enough open the scleral flap and can peel off the scleral flap, and at the operation in-process, convenient to use, operating efficiency is high.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings that are needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic view of a puncture knife according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the puncture knife shown in FIG. 1 from another perspective;

FIG. 3 is a schematic view of the puncture knife shown in FIG. 1 from another perspective;

fig. 4 is an enlarged schematic view of a portion a of the piercing knife shown in fig. 2;

fig. 5 is an enlarged schematic view of a portion B of the piercing knife shown in fig. 3.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application, are within the scope of protection of the present application.

Referring to fig. 1 to 5, fig. 1 is a schematic view structure diagram of a puncture knife according to an embodiment of the present application; FIG. 2 is a schematic view of the puncture knife shown in FIG. 1 from another perspective; FIG. 3 is a schematic view of the puncture knife shown in FIG. 1 from another perspective; fig. 4 is an enlarged schematic view of a portion a of the piercing knife shown in fig. 2; fig. 5 is an enlarged schematic view of a portion B of the piercing knife shown in fig. 3. The puncture knife of the embodiment is used for glaucoma surgery, the puncture knife comprises a knife handle 10 and a knife body 20, the knife handle 10 comprises a cylindrical main body part 101 and a conical holding part 102 connected with one end of the main body part 101, the main body part 101 and the holding part 102 are integrally formed, one end of the main body part 101, which is far away from the holding part 102, is provided with a notch 103 for preventing the puncture knife from rolling or packaging a bayonet during surgery, the knife body 20 comprises a connecting part 201 and a knife head part 202, the connecting part 201 is connected with one end of the holding part 102, which is far away from the main body part 101, the center line of the connecting part 201 is overlapped with the center line of the knife handle 10, the knife head part 202 comprises a knife head body, the knife head body is provided with a first side surface 2021 and a second side surface 2022 which are opposite, the first side surface 2021 and the second side surface 2022 extend and intersect at the bottom along the longitudinal center plane of the knife head body to form a knife edge 2023, and the knife edge 2023 forms an included angle alpha of 30-45 degrees with the front side surface of the knife head body, preferably 40, this contained angle has guaranteed the sharpness of tool bit body, is convenient for cut the scleral flap, can not too sharp again simultaneously, leads to being difficult for controlling, the injury scleral flap.

Wherein the thickness H of the tool bit body is 0.08-0.3mm, preferably 0.2 mm.

Wherein the first side 2021 and/or the second side 2022 are provided with a marking line 21 for marking a depth. The marking lines 21 are convenient for a doctor to visually see the undercut depth of the puncture knife during an operation, wherein the marking lines can be multiple, for example, the marking lines 21 are respectively arranged at 0.3mm, 0.4mm and 0.5mm, and the marking lines 21 are formed by laser engraving, laser printing, silk screen printing or machining.

Wherein the bit portion 202 and the connecting portion 201 are integrally formed. The integrally formed cutter body has excellent structural strength.

It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are referred to in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.

Claims

1. A puncture knife is used for glaucoma surgery and is characterized by comprising a knife handle and a knife body, wherein the knife handle comprises a cylindrical main body part and a holding part connected with one end of the main body part and in a conical shape, the main body part and the holding part are integrally formed, one end, far away from the holding part, of the main body part is provided with a notch for preventing the puncture knife from rolling or packaging a bayonet during surgery, the knife body comprises a connecting part and a knife head part, the connecting part is connected with one end, far away from the main body part, of the holding part, the central line of the connecting part is coincided with the central line of the knife handle, the knife head part comprises a knife head body, the knife head body is provided with a first side surface and a second side surface which are opposite, and the first side surface and the second side surface extend and intersect to form a cutting edge along the longitudinal central plane of the knife head body at the bottom, the blade and the front side surface of the tool bit body form an included angle of 30-45 degrees.

2. A puncture knife according to claim 1, wherein the blade body has a thickness of 0.08-0.3 mm.

3. A puncture knife according to claim 1, wherein the first side face and/or the second side face is provided with a marking line for indicating a depth.

4. A puncture knife according to claim 3, wherein the marking line is formed by laser engraving, laser printing, silk screening or machining.

5. A puncture knife according to any one of claims 1 to 4, wherein the knife head portion and the connecting portion are integrally formed.