CN211433177U

CN211433177U - Medical scalpel

Info

Publication number: CN211433177U
Application number: CN201922295699.XU
Authority: CN
Inventors: 沈美红; 李晓伟
Original assignee: Hangzhou Qiaoxin Industrial Design Co ltd
Current assignee: Hangzhou Qiaoxin Industrial Design Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-08
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a medical scalpel, including handle and spear puncture sword, spear puncture sword comprises arbor and spear tool bit, spear puncture sword passes through the arbor and installs the front end at the handle, spear tool bit left and right sides has symmetrical left knife edge and right knife edge, left side knife edge is by left spear sharp section sword reason, left side straightway sword reason, left side flaring section sword reason and left contraction section sword reason connect gradually and form, right side knife edge is by right spear sharp section sword reason, right side straightway sword reason, right side flaring section sword reason and right contraction section sword reason connect gradually and form, the contained angle of left spear sharp section sword reason and right spear sharp section sword reason is 45 degrees to 65 degrees, the contained angle of left side flaring section sword reason and right flaring section sword reason is 55 degrees to 75 degrees. The depth and the width of the incision can be more easily mastered by an operator, the unexpected expansion of the incision is avoided, and the operation skill and the operation difficulty of the operator are reduced.

Description

Medical scalpel

Technical Field

The utility model relates to the technical field of medical equipment, in particular to medical scalpel.

Background

Although a cataract is a blinding eye disease, vision can be restored by surgical removal of the clouded crystalline lens and implantation of an intraocular lens. Today, the medicine can only delay the development of the disease at most, but the cataract develops slowly and the medicine is not different from the patient. Therefore, the first treatment for cataracts is surgery. Ophthalmologists are able to perform such delicate surgical procedures because of the highly specialized surgical instruments available. A conventional cataract surgery, although in a short time, requires a separate instrument for each procedure. Taking a knife as an example, a spear-shaped puncture knife, a diamond-shaped puncture knife and a moon-shaped puncture knife are mostly adopted for making a puncture incision, however, when the existing knife head is adopted for making the puncture incision, the depth and the length of the incision need to be determined through visual observation, the operation skill and the difficulty are extremely high, the unexpected excessive penetration of the knife head is easily caused, and the depth and the length of the incision are further enlarged.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a medical treatment scalpel, can make operation doctor grasp notched degree of depth and width more easily, avoids the unexpected expansion of incision, reduces doctor's operation technique and the degree of difficulty.

The utility model discloses a make above-mentioned technical problem solve through following technical scheme.

A medical scalpel comprises a handle and a spear-shaped puncture knife, wherein the spear-shaped puncture knife is composed of a knife shaft and a spear-shaped knife head, the spear-shaped puncture knife is installed at the front end of the handle through the knife shaft, the left side and the right side of the spear-shaped knife head are provided with a left knife edge and a right knife edge which are symmetrical, the left knife edge is formed by sequentially connecting a left spear sharp section knife edge, a left straight section knife edge, a left outward expansion section knife edge and a left contraction section knife edge, the right knife edge is formed by sequentially connecting a right spear sharp section knife edge, a right straight section knife edge, a right outward expansion section knife edge and a right contraction section knife edge, the included angle between the left spear sharp section knife edge and the right spear sharp section knife edge is 45-65 degrees, and the included angle between the left outward expansion section knife edge and the right outward expansion.

Preferably, a convex rib is formed in the middle of the upper surface of the lance tip section and the straight section of the lance head along the length direction of the cutter body.

Preferably, the width of the convex ribs is 0.3mm to 1 mm.

Preferably, the thickness between the upper surface of the bead and the lower surface of the lance head is 0.15 mm.

Preferably, the thickness between the upper surface of the bead and the upper surface of the lance head is 0.08 mm.

Preferably, the left edge has a left edge surface inclined inward, and the right edge has a right edge surface inclined inward.

Preferably, the angle of inclination of the left and right blade faces is 20 degrees.

Preferably, the lengths of the left straight line section edge and the right straight line section edge are 0.4cm to 0.8 cm.

The utility model has the advantages that:

1. because the left and right knife edges are composed of the lance tip section knife edge, the straight section knife edge, the outward expanding section knife edge and the contracting section knife edge, after the lance tip section knife edge cuts a wound, the self inclination angles of the lance tip section knife edge and the outward expanding section knife edge are different, an angle difference easy to visually identify is formed, the depth range of the cutter head is accurately mastered by a surgeon, the straight section knife edge is used as a buffer area, and the buffer for stopping depth expansion of the wound is provided for the surgeon, so that the unexpected expansion of the depth and width of the cut is effectively avoided, and the precision of operation implementation is favorably guaranteed.

2. The upper surface of spear-shaped cutter head spear tip section and straightway is equipped with protruding rib, can be under the condition that reduces blade thickness, keeps good rigidity, and when the operation implementation in-process of cutting edge face about can reducing the corneal resistance, the effectual blade that prevents warp is of value to the precision of guaranteeing the operation implementation.

Drawings

The following drawings are intended to facilitate the description of the preferred embodiments and do not limit the scope of the invention.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural view of a spear-shaped cutter head according to an embodiment of the present invention;

fig. 3 is a schematic sectional view taken along the line a-a in fig. 2.

In the figure: 1-handle, 2-spear-shaped puncture knife, 3-knife shaft, 4-spear-shaped knife head, 5-left edge, 51-left spear tip section edge, 52-left straight section edge, 53-left outward expansion section edge, 54-left contraction section edge, 6-right edge, 61-right spear tip section edge, 62-right straight section edge, 63-right outward expansion section edge, 64-right contraction section edge, 7-convex rib, 8-left edge face and 9-right edge face.

Detailed Description

For the convenience of understanding, the present invention will be described in detail with reference to the preferred embodiments of the present invention shown in the accompanying drawings.

As shown in fig. 1 to 3, the medical scalpel according to the embodiment of the present invention includes a handle 1 and a lance-shaped puncture knife 2, wherein the handle 1 may be made of aluminum alloy or rigid plastic. The spear-shaped puncture knife 2 is composed of a knife shaft 3 and a spear-shaped knife head 4, and a certain included angle, for example 135 degrees, is formed between the knife shaft 3 and the spear-shaped knife head 4. The spear-shaped puncture knife 2 is of an integrally formed structure made of stainless steel or titanium alloy materials, and the spear-shaped puncture knife 2 is installed at the front end of the handle 1 through the knife shaft 3.

The lance 4 has left and right

symmetrical edges

5, 6 on both sides, and the left and

right edges

5, 6 have left and right

inclined edges

8, 9 formed inward, preferably, the angle of inclination of the left and right edges is 20 degrees. The left edge 5 is formed by sequentially connecting a left lance tip edge 51, a left straight line edge 52, a left outward expansion section edge 53 and a left contraction section edge 54, the right edge 6 is formed by sequentially connecting a right lance tip edge 61, a right straight line edge 62, a right outward expansion section edge 63 and a right contraction section edge 64, the included angle between the left lance tip edge 51 and the right lance tip edge 61 is 45-65 degrees, and the included angle between the left outward expansion section edge 53 and the right outward expansion section edge 63 is 55-75 degrees, so that the lance tip edge and the outward expansion section edge form an easily-identified angle difference. The left linear edge 52 and the right linear edge 62 are preferably 0.4cm to 0.8cm long, for example 0.5cm long, and this distance provides the surgeon with a buffer to stop penetrating the enlarged wound, and the surgeon can immediately perceive the location of the flared edge and stop continuing to penetrate the scalpel head into the wound.

Further, a convex rib 7 is formed in the middle of the upper surface of the lance tip section and the straight section of the lance-shaped bit 4 along the length direction of the blade. The width of the bead 7 is preferably 0.3mm to 1mm in order to increase the rigidity moderately according to the thickness of the blade body. In a specific embodiment, the thickness between the upper surface of the bead 7 and the lower surface of the lance 4 is 0.15mm, and the thickness between the upper surface of the bead 7 and the upper surface of the lance 4 is 0.08 mm.

The above-mentioned embodiments are only embodiments of the present invention, and are not used for limiting the protection scope of the present invention, based on the technical concept of the present invention, any changes and improved embodiments that can be easily replaced by the known technologies or the conventional technologies in the technical field should be covered within the protection scope of the present invention.

Claims

1. A medical scalpel is characterized in that: comprises a handle (1) and a spear-shaped puncture knife (2), wherein the spear-shaped puncture knife (2) consists of a knife shaft (3) and a spear-shaped knife head (4), the spear-shaped puncture knife (2) is arranged at the front end of the handle (1) through the knife shaft (3), the left side and the right side of the spear-shaped knife head (4) are provided with a left knife edge (5) and a right knife edge (6) which are symmetrical, the left knife edge (5) is formed by sequentially connecting a left spear tip section knife edge (51), a left straight line section knife edge (52), a left outer expanding section knife edge (53) and a left contracting section knife edge (54), the right knife edge (6) is formed by a right spear tip section knife edge (61), the right straight section edge (62), the right outward-expanding section edge (63) and the right contraction section edge (64) are sequentially connected to form the structure, the included angle between the left spearpoint section edge (51) and the right spearpoint section edge (61) is 45-65 degrees, and the included angle between the left outward-expanding section edge (53) and the right outward-expanding section edge (63) is 55-75 degrees.

2. The medical scalpel of claim 1, wherein: and a convex rib (7) is formed in the middle of the spear tip section and the upper surface of the straight section of the spear-shaped cutter head (4) along the length direction of the cutter body.

3. The medical scalpel of claim 2, wherein: the width of the convex ribs (7) is 0.3mm to 1 mm.

4. The medical scalpel of claim 1, wherein: the thickness between the upper surface of the convex rib (7) and the lower surface of the spear-shaped cutter head (4) is 0.15 mm.

5. The medical scalpel of claim 4, wherein: the thickness between the upper surface of the convex rib (7) and the upper surface of the spear-shaped cutter head (4) is 0.08 mm.

6. The medical scalpel of claim 1, wherein: the left edge (5) is provided with an inclined left edge surface (8) facing the inner side, and the right edge (6) is provided with an inclined right edge surface (9) facing the inner side.

7. The medical scalpel of claim 6, wherein: the inclined angle of the left edge surface (8) and the right edge surface (9) is 20 degrees.

8. The medical scalpel of claim 1, wherein: the lengths of the left straight line section edge (52) and the right straight line section edge (62) are 0.4 cm-0.8 cm.