阅读说明：本技术 一种刀片可伸缩式手术刀 (Scalpel with retractable blade ) 是由 黄景运 于 2020-08-03 设计创作，主要内容包括：本发明公开了一种刀片可伸缩式手术刀,包括刀柄、刀架、刀片和端盖,所述刀柄的内部成型有左右方向贯穿的矩形孔,所述刀架包括一体成型的矩形滑块及固定在矩形滑块右端的刀片固定座,所述刀片固定在刀片固定座上,所述矩形滑块插套在矩形孔的右端,所述矩形滑块上设有驱使其左右移动的拨动机构,所述端盖插套并固定在矩形孔的左端。本发明的刀片可缩入到刀柄内,避免了手术刀在转移或使用过程中多个手术刀相互碰撞刀片产生的磕碰伤,同时刀片的缩入和弹出操作方便、快捷。(The invention discloses a scalpel with a telescopic blade, which comprises a scalpel handle, a scalpel frame, a blade and an end cover, wherein a rectangular hole penetrating in the left-right direction is formed in the scalpel handle, the scalpel frame comprises an integrally formed rectangular sliding block and a blade fixing seat fixed at the right end of the rectangular sliding block, the blade is fixed on the blade fixing seat, the rectangular sliding block is inserted and sleeved at the right end of the rectangular hole, a shifting mechanism for driving the rectangular sliding block to move left and right is arranged on the rectangular sliding block, and the end cover is inserted and sleeved at the left end of the rectangular hole and fixed. The blade of the invention can be retracted into the knife handle, thereby avoiding the collision injury caused by the mutual collision of a plurality of scalpels with the blade in the transferring or using process of the scalpels, and simultaneously, the retraction and the ejection of the blade are convenient and rapid.)

1. The utility model provides a blade retractable scalpel, includes handle of a knife (1), knife rest (2), blade (3) and end cover (4), its characterized in that: the utility model discloses a cutter handle, including handle of a knife (1), the inside shaping of handle of a knife (1) has rectangular hole (101) that the left-right direction runs through, knife rest (2) include integrated into one piece's rectangle slider (21) and fix blade fixing base (22) at rectangle slider (21) right-hand member, blade (3) are fixed on blade fixing base (22), rectangle slider (21) plug bush is at the right-hand member of rectangular hole (101), be equipped with on rectangle slider (21) and order about its toggle mechanism (5) that remove, end cover (4) plug bush is fixed at the left end of rectangular hole (101).

2. The scalpel with retractable blades as defined in claim 1, wherein: a counter bore (211) with an opening at the front side, a driving groove (212) with an opening at the upper side and a spring cavity (213) with an opening at the left side are formed on the rectangular sliding block (21); a positioning hole (102) which is coaxial with the pin hole (211) and a parallelogram groove (103) with an opening at the upper side are formed on the cutter handle (1);

the toggle mechanism (5) comprises a limit pin shaft (51), a rotating shaft (52), a toggle arm (53), a pressure spring (54) and a tension spring (55), wherein the front end of the limit pin shaft (51) is inserted and sleeved in the positioning hole (102), the rear end of the limit pin shaft (51) is inserted and sleeved in the counter bore (211), the pressure spring (54) is clamped between the rear end surface of the limit pin shaft (51) and the bottom surface of the counter bore (211), and the limit pin shaft (51) is formed with a right-angled trapezoidal groove (511); the rotating shaft (52) is hinged to the lower end of the driving groove (212) and located on the right 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 an inclined surface (512) of the right-angle trapezoidal groove (511), the upper end of the poking arm (53) penetrates through the parallelogram groove (103) to extend out of the knife handle (1), and the right side wall of the poking arm (53) is pressed against the right side wall of the parallelogram groove (103); extension spring (55) cup joints in spring chamber (213), and the both ends of extension spring (55) are fixed respectively on the bottom surface of spring chamber (213) and spring holder (56), and spring holder (56) plug bush is at the right-hand member of rectangular hole (101) and with end cover (4) fixed connection.

3. The scalpel with retractable blades as defined in 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); a plurality of arc strip bulges (105) which are linearly and uniformly distributed are formed on the front side wall and the rear side wall of the knife handle (1).

4. The scalpel with retractable blades as defined in claim 1, wherein: blade fixing base (22) include with rectangle slider (21) fixed connection's connecting plate (221), the right-hand member of connecting plate (221) is fixed with protruding (222) of first waist type, is fixed with protruding (223) of second waist type on protruding (222) of first waist type, is fixed with baffle (224) on protruding (223) of second waist type, the profile of protruding (223) of second waist type is less than protruding (222) of first waist type, the shaping has the waist type hole with protruding (222) matched with of first waist type on blade (4), waist type hole plug bush is on protruding (222) of first waist type, and the thickness of blade (4) is greater than the height of protruding (222) of first waist type, has cup jointed inserted sheet (23) that are "U" style of calligraphy in the clearance between blade (4) and baffle (224), and plug bush (23) plug bush is on protruding (223) of second waist type.

5. The scalpel with retractable blades as defined in claim 4, wherein: the blade fixing seat (22) can be connected with blades (4) with different specifications and thicknesses, and the thickness of the inserting piece (23) has multiple specifications.

6. The scalpel with retractable blades as defined in claim 4, wherein: two support arms of inserted sheet (23) respectively go up the shaping and have an outside convex journal stirrup (231), and the shaping has jack (232) on journal stirrup (231).

7. A scalpel with retractable blades as defined in claim 2 wherein: and a shifting arm abdicating notch (106) is formed at the right end of the parallelogram groove (103).

8. A scalpel with retractable blades as defined in claim 2 wherein: a limiting ring (57) is fixed on the middle inner wall of the rectangular hole (101), the tension spring (55) penetrates through the limiting ring (57), and the distance L1 between the limiting ring (57) and the left end face of the rectangular sliding block (21) is greater than the distance L2 between the rightmost end of the blade (4) and the right end face of the knife handle (1).

Technical Field

The invention relates to the technical field of surgical instruments, in particular to a scalpel with a telescopic blade.

Background

Existing scalpels are typically comprised of a blade and a handle. The blade usually has a cutting edge and a mounting groove for abutting against the scalpel handle, and the blade is usually made of pure titanium, titanium alloy, stainless steel or carbon steel. The scalpel is easy to collide with each other in the transferring or using process, and the blade of the scalpel is easy to be collided, so that the quality of the blade in operation is influenced or the blade is directly scrapped.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a scalpel with a retractable blade, the blade of the scalpel can be retracted into a scalpel handle, the collision injury caused by mutual collision of a plurality of scalpels during the transferring or using process of the scalpel is avoided, and the retracting and ejecting operations of the blade are convenient and rapid.

The scheme for solving the technical problems is as follows:

the utility model provides a blade retractable scalpel, includes handle of a knife, knife rest, blade and end cover, the inside shaping of handle of a knife has the rectangular hole that the direction runs through about, the knife rest includes integrated into one piece's rectangle slider and fixes the blade fixing base at rectangle slider right-hand member, the blade is fixed on the blade fixing base, the right-hand member of rectangle slider plug bush in the rectangular hole, be equipped with on the rectangle slider and order about its toggle mechanism who removes, the left end in the rectangular hole is fixed to the end cover plug bush.

A counter bore with an opening at the front side, a driving groove with an opening at the upper side and a spring cavity with an opening at the left side are formed on the rectangular sliding block; a positioning hole which is coaxial with the pin hole and a parallelogram groove with an opening at the upper side are formed on the cutter handle;

the toggle mechanism comprises a limiting pin shaft, a rotating shaft, a toggle arm, a pressure spring and a tension spring, wherein the front end of the limiting pin shaft is inserted and sleeved in the positioning hole, the rear end of the limiting pin shaft is inserted and sleeved in the counter bore, the pressure spring is clamped between the rear end surface 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 right side of the limiting pin shaft, the lower end of the poking arm is fixed on the rotating shaft, the middle of the poking arm is pressed against the inclined plane of the right trapezoid groove, the upper end of the poking arm penetrates through the parallelogram groove and extends out of the tool holder, and the right side wall of the poking arm is pressed against the right side wall of the parallelogram groove; the extension spring cup joints in the spring chamber, and the both ends of extension spring are fixed respectively on the bottom surface in spring chamber and spring holder, and the spring holder plug bush is at the right-hand member in rectangular hole and with end cover fixed connection.

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; a plurality of arc strip bulges which are linearly and uniformly distributed are formed on the front side wall and the rear side wall of the knife handle.

Blade fixing base include with rectangle slider fixed connection's connecting plate, the right-hand member of connecting plate is fixed with first waist type arch, first waist type arch on be fixed with second waist type arch, is fixed with the baffle in the second waist type arch, the bellied profile of second waist type is less than first waist type arch, the shaping has with the protruding matched with waist type hole of first waist type on the blade, waist type hole plug bush is protruding on first waist type, and the thickness of blade is greater than the bellied height of first waist type, has cup jointed the inserted sheet that is "U" style of calligraphy in the clearance between blade and the baffle, and the inserted sheet plug bush is protruding on second waist type.

The blade fixing seat can be connected with blades of various specifications and thicknesses, and the thickness of the inserting piece has various specifications.

Two support arms of the inserting piece are respectively provided with a support lug protruding outwards, and a jack is formed on the support lug.

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

A limiting ring is fixed on the middle inner wall of the rectangular hole, the tension spring penetrates through the limiting ring, and the distance L1 between the limiting ring and the left end face of the rectangular sliding block is greater than the distance L2 between the rightmost end of the blade and the right end face of the knife handle.

The invention has the following outstanding effects: compared with the prior art, the blade of the scalpel can be retracted into the scalpel handle, collision damage caused by mutual collision of the scalpel blades in the transferring or using process of the scalpel is avoided, and the retracting and popping operations of the blade are convenient and rapid.

Drawings

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

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

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a cross-sectional view of FIG. 3 taken about B-B;

fig. 5 is a partially enlarged view of fig. 1 about C.

Detailed Description