阅读说明：本技术 一种单刀柄双刀片伸缩式手术刀 (Single-handle double-blade telescopic scalpel ) 是由 黄景运 于 2020-08-03 设计创作，主要内容包括：本发明公开了一种单刀柄双刀片伸缩式手术刀,包括刀柄,所述刀柄成型有两端大中间小的矩形台阶孔,矩形台阶孔的两端大孔内各套接有一个可左右移动的矩形滑块,每个矩形滑块的外端固定有刀片固定座,每个刀片固定座上固定有刀片,所述两个矩形滑块的内端之间固定有拉簧,每个矩形滑块设有一个驱使其左右移动的拨动机构。本发明的两端可以各安装一把刀片,手术时能快速换刀,且刀片可以缩回刀柄内,可有效保护刀片且方便携带和转移。(The invention discloses a single-handle double-blade telescopic scalpel which comprises a scalpel handle, wherein a rectangular step hole with two large ends and a small middle is formed in the scalpel handle, rectangular sliding blocks capable of moving left and right are sleeved in the large holes at the two ends of the rectangular step hole respectively, a blade fixing seat is fixed at the outer end of each rectangular sliding block, a blade is fixed on each blade fixing seat, a tension spring is fixed between the inner ends of the two rectangular sliding blocks, and each rectangular sliding block is provided with a shifting mechanism for driving the rectangular sliding block to move left and right. The two ends of the knife holder can be respectively provided with a blade, so that the knife can be quickly changed during operation, and the blades can retract into the knife handle, thereby effectively protecting the blades and being convenient to carry and transfer.)

1. The utility model provides a telescopic scalpel of single handle double blade, includes handle of a knife (1), its characterized in that: handle of a knife (1) shaping has big middle little rectangle step hole (101) in both ends, respectively cup joints rectangle slider (2) that can move about in the both ends macropore of rectangle step hole (101), and the outer end of every rectangle slider (2) is fixed with blade fixing base (3), is fixed with blade (4) on every blade fixing base (3), be fixed with extension spring (6) between the inner of two rectangle sliders (2), every rectangle slider (2) are equipped with one and order about its toggle mechanism (5) that moves.

2. The single-handle double-blade telescopic scalpel according to claim 1, wherein: counter bores (201) arranged in the front-back direction and a driving groove (202) with an opening at the upper side are formed in the rectangular sliding block (2); two ends of the rectangular stepped hole (101) are respectively provided with a positioning hole (102) corresponding to the counter bore (201) and a parallelogram groove (103) with an opening at the upper side;

the toggle mechanism (5) comprises a limit pin shaft (51), a rotating shaft (52), a toggle arm (53) and a pressure spring (54), one end of the limit pin shaft (51) is inserted and sleeved in the positioning hole (102), the other end of the limit pin shaft (51) of the left toggle mechanism (5) is pressed against the inner side wall of the rectangular stepped hole (101) on the same side with the left positioning hole (102), and the other end of the limit pin shaft (51) of the right toggle mechanism (5) is inserted and sleeved in the right positioning hole (102);

the pressure spring (54) is clamped between the end face of the limiting pin shaft (51) and the bottom face of the counter bore (211), and a right-angled trapezoidal groove (511) is formed in the limiting pin shaft (51); the rotating shaft (52) is hinged to the lower end of the driving groove (202) and located on the outer side of the limiting pin shaft (51), the lower end of the poking arm (53) is fixed to the rotating shaft (52), the middle of the poking arm (53) is pressed against the inclined surface (512) of the right-angled trapezoidal groove (511), and the upper end of the poking arm (53) penetrates through the parallelogram groove (103) and extends out of the knife handle (1).

3. The single-handle double-blade telescopic scalpel according to claim 1, wherein: blade fixing base (3) are including fixing connecting plate (31) in rectangle slider (2) outer end, and the end fixing of connecting plate (31) has location arch (32), location arch (32) with mounting hole (401) of blade (4) cooperate, and mounting hole (401) plug bush of blade (4) is on location arch (32), blade (4) centre gripping is in the one end of connecting plate (31) and rectangle clamp plate (33), and the other end of rectangle clamp plate (33) is fixed on movable spring seat (34), and in movable spring seat (34) plug bush jack (203) on rectangle slider (2), movable spring seat (34) are through second extension spring (35) fixedly connected with fixed spring seat (36), and fixed spring seat (36) are fixed in jack (203).

4. The single-handle double-blade telescopic scalpel as claimed in claim 3, wherein: a chamfer (331) is formed at one edge of the rectangular pressing plate (33) close to the blade (4).

5. The single-handle double-blade telescopic scalpel as claimed in claim 3, wherein: and a pushing lug (332) is formed on the end part of one surface of the rectangular pressing plate (33) far away from the blade (4).

6. The single-handle double-blade telescopic scalpel according to claim 1, wherein: a plurality of semicircular grooves (104) which are linearly and uniformly distributed are formed on the upper side wall and the lower side wall of the knife handle (1); the handle of a knife is characterized in that a plurality of linear uniformly distributed first arc strip bulges (105) are formed on the front side wall and the rear side wall of the left end of the handle of a knife (1), a plurality of linear uniformly distributed second arc strip bulges (106) are formed on the front side wall and the rear side wall of the right end of the handle of a knife (1), and the first arc strip bulges (105) and the second arc strip bulges (106) are arranged in a bilateral symmetry mode.

7. The single-handle double-blade telescopic scalpel as claimed in claim 2, wherein: and a shifting arm abdicating notch (107) is formed at the outer end of the parallelogram groove (103).

8. The single-handle double-blade telescopic scalpel according to claim 1, wherein: the right end of the left rectangular sliding block (2) is pressed on the step surface between the large hole at the left end of the rectangular step hole (101) and the small hole at the middle, and the distance L1 between the left end of the right rectangular sliding block (2) and the step surface between the large hole at the right end of the rectangular step hole (101) and the small hole at the middle is larger than the distance L2 between the rightmost end of the right blade (4) and the right end of the tool holder (1).

Technical Field

The invention relates to the technical field of surgical instruments, in particular to a single-handle double-blade telescopic scalpel.

Background

The surgical knife is frequently used in surgical operations, the types of the surgical knife are more, the surgical knife with various types is often needed in one operation, the existing surgical knife consists of a single blade and a single handle, and the surgical knife needs to be frequently replaced in the operation process, so that the operation efficiency is influenced; if the operation is carried out emergently, a plurality of scalpels need to be carried, which is very inconvenient.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a single-handle double-blade telescopic scalpel, two ends of the scalpel can be respectively provided with a blade, the scalpel can be quickly changed during operation, the blades can retract into a handle, the blades can be effectively protected, and the scalpel is convenient to carry and transfer.

The scheme for solving the technical problems is as follows:

the utility model provides a telescopic scalpel of single handle of a knife double blade, includes the handle of a knife, the handle of a knife shaping has the little rectangle step hole in the big centre in both ends, respectively cup joints a rectangle slider that can remove about in the both ends macropore in rectangle step hole, and the outer end of every rectangle slider is fixed with the blade fixing base, is fixed with the blade on every blade fixing base, be fixed with the extension spring between the inner of two rectangle sliders, every rectangle slider is equipped with one and orders about its toggle mechanism who removes.

Counter bores arranged in the front-back direction and a driving groove with an opening at the upper side are formed in the rectangular sliding block; two ends of the rectangular stepped hole are respectively formed with a positioning hole corresponding to the counter bore and a parallelogram groove with an opening at the upper side;

the toggle mechanism comprises a limit pin shaft, a rotating shaft, a toggle arm and a pressure spring, one end of the limit pin shaft is inserted and sleeved in the positioning hole, the other end of the limit pin shaft of the left toggle mechanism is pressed against the inner side wall of the rectangular stepped hole on the same side with the positioning hole on the left side, and the other end of the limit pin shaft of the right toggle mechanism is inserted and sleeved in the positioning hole on the right side;

the pressure spring is clamped between the end face of the limiting pin shaft and the bottom surface of the counter bore, and a right-angled trapezoidal groove is formed in the limiting pin shaft; the rotating shaft is hinged to the lower end of the driving groove and located on the outer side of the limiting pin shaft, the lower end of the poking arm is fixed to the rotating shaft, the middle of the poking arm is pressed against the inclined surface of the right-angled trapezoidal groove, and the upper end of the poking arm penetrates through the parallelogram groove and extends out of the knife handle.

The blade fixing seat comprises a connecting plate fixed at the outer end of the rectangular sliding block, a positioning bulge is fixed at the end of the connecting plate, the positioning bulge is matched with the mounting hole of the blade, the mounting hole plug bush of the blade is arranged on the positioning bulge, the blade is clamped at one end of the connecting plate and one end of the rectangular pressing plate, the other end of the rectangular pressing plate is fixed on the movable spring seat, the movable spring seat is plugged in the plug hole in the rectangular sliding block, the movable spring seat is fixedly connected with a fixed spring seat through a second tension spring, and the fixed spring seat is fixed in.

A chamfer is formed at one edge of the rectangular pressing plate close to the blade.

And a pushing lug is formed on the end part of one surface of the rectangular pressing plate, which is far away from the blade.

A plurality of semicircular grooves which are linearly and uniformly distributed are formed on the upper side wall and the lower side wall of the knife handle; the handle of a knife is characterized in that a plurality of first arc strip bulges which are linearly and uniformly distributed are formed on the front side wall and the rear side wall of the left end of the handle of a knife, a plurality of second arc strip bulges which are linearly and uniformly distributed are formed on the front side wall and the rear side wall of the right end of the handle of a knife, and the first arc strip bulges and the second arc strip bulges are arranged in a bilateral symmetry mode.

And a shifting arm abdicating opening is formed at the outer end of the parallelogram groove.

The right end of the left rectangular sliding block is pressed on a step surface between the large hole at the left end of the rectangular step hole and the small hole in the middle, and the distance L1 between the left end of the right rectangular sliding block and the step surfaces between the large hole at the right end of the rectangular step hole and the small hole in the middle is larger than the distance L2 between the rightmost end of the right blade and the right end of the knife handle.

The invention has the following outstanding effects: compared with the prior art, the two ends of the knife holder can be respectively provided with a blade, so that the knife can be quickly changed during operation, and the blades can retract into the knife handle, thereby effectively protecting the blades and being convenient to carry and transfer.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;

FIG. 4 is a partial enlarged view of FIG. 3 with respect to B;

FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;

FIG. 6 is an enlarged view of a portion of FIG. 3 taken about D;

FIG. 7 is a cross-sectional view taken along E-E of FIG. 6;

FIG. 8 is an enlarged view of a portion of FIG. 1 about F;

FIG. 9 is a first cross-sectional view of the portion of FIG. 8;

fig. 10 is a second cross-sectional view of the portion of fig. 8.

Detailed Description