CN214387531U

CN214387531U - Skin sampling knife

Info

Publication number: CN214387531U
Application number: CN202022529308.9U
Authority: CN
Inventors: 李启欣; 江海燕; 罗小娟; 邱志琦; 詹建清; 伍启康
Original assignee: Foshan First Peoples Hospital Foshan Hospital Sun Yat Sen University
Current assignee: Foshan First Peoples Hospital Foshan Hospital Sun Yat Sen University
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-10-15
Anticipated expiration: 2030-11-04

Abstract

The utility model discloses a skin sword of drawing materials, include: the cutter handle comprises a handle body, wherein the front end of the handle body is provided with an upper limiting piece and a lower limiting piece, a limiting gap is formed between the upper limiting piece and the lower limiting piece, the front end surface of the handle body is provided with a blind hole, a left ejector rod and a right ejector rod are arranged in the blind hole, the left ejector rod is rotatably connected into the blind hole through a first rotating shaft, the right ejector rod is rotatably connected into the blind hole through a second rotating shaft, the top surface of the handle body is provided with a sliding groove, a sliding block is slidably connected into the sliding groove, a through channel is formed in the sliding block, and the rear ends of the left ejector rod and the right ejector rod penetrate through the through channel; the blade, its surface is provided with the slotted hole, and the left side limit of slotted hole is located spacing clearance and offsets with left ejector pin, and the right side limit of slotted hole is located spacing clearance and offsets with right ejector pin, the utility model discloses it is more convenient to install and remove of blade and handle of a knife, need not difficultly imbed the blade into the handle of a knife on, reduced operating personnel because misoperation and caused the risk of injury to self.

Description

Skin sampling knife

Technical Field

The utility model relates to a medical instrument especially relates to a skin sword of drawing materials.

Background

Whether there is the fungi at inspection skin, generally need use skin sword of drawing materials, current skin sword of drawing materials includes handle of a knife and blade, the handle of a knife is used repeatedly spare, and the blade is disposable consumption spare, when the sword is drawn materials to equipment skin, in order to guarantee the sanitation and hygiene of blade, generally need utilize the pliers to press from both sides the blade, the notch has on the blade, and the same spacing groove that mutually supports with this notch that has on the handle of a knife, utilize the closely cooperating of notch and spacing groove, can be with on the fixed handle of a knife of blade. In the fixing process, because fixed mounting is realized through interference fit's mode between spacing groove and the notch, consequently medical personnel need insert the blade to the handle of a knife with strength, but when exerting oneself too violently, the pliers or blade that appear very easily snatch the unstability and lead to the departure of blade, cause the accidental injury problem, also appear this type of safety problem equally easily when dismantling moreover.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a skin sword of drawing materials to solve one or more technical problem that exist among the prior art, provide a profitable selection or create the condition at least.

The utility model provides a solution of its technical problem is:

a skin sampling knife comprising: the knife handle comprises a handle body, the handle body extends along the front-back direction, an upper limiting piece and a lower limiting piece are arranged at the front end of the handle body, a limiting gap is formed between the upper limiting piece and the lower limiting piece, a blind hole is arranged on the front end face of the handle body and is positioned between the upper limiting piece and the lower limiting piece, a left ejector rod and a right ejector rod are arranged in the blind hole along the left-right direction at intervals, the front end of the left ejector rod and the front end of the right ejector rod both penetrate out of the blind hole and extend into the limiting gap, the left ejector rod is rotatably connected in the blind hole through a first rotating shaft, the right ejector rod is rotatably connected in the blind hole through a second rotating shaft, the central line of the first rotating shaft and the central line of the second rotating shaft both extend along the up-down direction, a sliding groove is arranged on the top face of the handle body, and the blind hole are mutually communicated, the sliding block is connected in the sliding groove in a sliding mode and can slide in the sliding groove in the front-back direction, a through channel extending in the front-back direction is formed in the sliding block, the rear ends of the left ejector rod and the right ejector rod penetrate through the through channel, and the inner diameter of the through channel is smaller than that of the blind hole; the surface of the blade is provided with a slotted hole, the slotted hole extends to the rear side edge of the blade, the left side edge of the slotted hole is positioned in the limiting gap and propped against the left ejector rod, and the right side edge of the slotted hole is positioned in the limiting gap and propped against the right ejector rod.

The technical scheme at least has the following beneficial effects: before the blade is assembled on the knife handle, the sliding block slides backwards in the sliding groove, the front part of the left ejector rod and the front part of the right ejector rod can be mutually closed under the action of external force, the slotted hole of the blade is pushed into the limiting gap, so that the left side edge and the right side edge of the slotted hole are both positioned in the limiting gap and are respectively arranged at the two sides of the left ejector rod and the right ejector rod, at the moment, the sliding block slides forwards, the penetrating channel limits the rear part of the left ejector rod and the rear part of the right ejector rod to enable the left ejector rod and the right ejector rod to rotate, the front part of the left ejector rod and the front part of the right ejector rod are mutually far away and respectively abut against the left side edge and the right side edge of the slotted hole, the sliding block slides forwards, the pushing force of the left ejector rod and the right ejector rod to the left side edge and the right side edge of the slotted hole is larger, so that the blade and the knife handle are mutually fixed, the blade is very simple to disassemble from the knife handle, and only the sliding block needs to slide backwards, remove left ejector pin and right ejector pin to the tight power in top of the left side limit of slotted hole, right side limit can, consequently, the utility model discloses it is more convenient to install and remove of blade and handle of a knife, need not hard ground imbed the blade into the handle of a knife on, reduced operating personnel because misoperation and lead to the fact the risk of injury to self, the practicality is higher.

As a further improvement of the technical scheme, a spring is connected between the rear side wall of the sliding block and the rear side wall of the sliding groove, and the sliding block has a forward movement tendency under the action of the elastic force of the spring. The spring can promote the slider forward for the top of left ejector pin and the top of right ejector pin keep pushing up the state of slotted hole left side, right side, and medical personnel are more convenient when using.

As a further improvement of the above technical solution, the left side wall of the through channel and the right side wall of the through channel gradually get closer from front to back. The left side wall of through passage and the right side wall of through passage are the inclined plane promptly to distance between left side wall and the right side wall reduces by preceding to back gradually, because the rear end of left ejector pin and the rear end of right ejector pin pass through passage, and this structural design can inject the interval of expanding left ejector pin and right ejector pin in through passage, and makes the slider more smooth and easy when sliding.

As a further improvement of the technical scheme, the top end of the left ejector rod is provided with an outer supporting section, and the left side surface of the outer supporting section is attached to the left side edge of the slotted hole. The outer supporting section is abutted and attached to the left side edge of the slotted hole, so that friction between the outer supporting section and the slotted hole can be increased, and the fixing structure between the blade and the knife handle is more stable.

As a further improvement of the above technical solution, a plurality of tooth sockets are uniformly arranged on the left side surface of the outer support section along the front-rear direction, a plurality of latches are arranged on the left side edge of the slot hole along the front-rear direction, the shape of the latch is matched with the shape of the tooth socket, and at least one latch is located in the tooth socket. The mutual matching of the clamping teeth and the tooth grooves can further limit the relative front and back movement between the blade and the knife handle, and improve the structural stability between the blade and the knife handle.

As a further improvement of the technical scheme, the right ejector rod and the left ejector rod are in a bilateral symmetry structure, and the right side edge of the slotted hole and the left side edge of the slotted hole are in a bilateral symmetry structure. The matching structure of the right ejector rod and the right side edge of the slotted hole is the same as the matching structure of the left ejector rod and the left side edge of the slotted hole, so that the jacking force of the right ejector rod on the right side edge of the slotted hole is enhanced.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is a schematic view of the overall internal structure of the present invention;

fig. 2 is an overall side view of the present invention;

fig. 3 is an elevation view of the blade of the present invention.

In the drawings: 100-handle body, 110-upper limiting piece, 120-lower limiting piece, 210-left ejector rod, 211-outer support section, 220-right ejector rod, 230-sliding block, 240-spring, 250-first rotating shaft, 260-second rotating shaft, 300-blade and 310-slotted hole.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1, 2 and 3, a skin sampling knife includes: the knife handle comprises a handle body 100, the handle body 100 extends along the front-back direction, an upper limiting piece 110 and a lower limiting piece 120 are arranged at the front end of the handle body 100, a limiting gap is formed between the upper limiting piece 110 and the lower limiting piece 120, a blind hole is arranged on the front end face of the handle body 100, the blind hole is located between the upper limiting piece 110 and the lower limiting piece 120, a left ejector rod 210 and a right ejector rod 220 are arranged in the blind hole at intervals along the left-right direction, the front end of the left ejector rod 210 and the front end of the right ejector rod 220 penetrate through the blind hole and extend into the limiting gap, the left ejector rod 210 is rotatably connected in the blind hole through a first rotating shaft 250, the right ejector rod 220 is rotatably connected in the blind hole through a second rotating shaft 260, the central line of the first rotating shaft 250 and the central line of the second rotating shaft 260 both extend along the up-down direction, a sliding groove is arranged on the top face of the handle body 100, the sliding groove is communicated with the blind hole, a sliding block 230 is connected in the sliding groove in a sliding mode, the sliding block 230 can slide in the sliding groove in the front-back direction, a through channel extending in the front-back direction is formed in the sliding block 230, the rear ends of the left ejector rod 210 and the right ejector rod 220 penetrate through the through channel, and the inner diameter of the through channel is smaller than that of the blind hole; the surface of the blade 300 is provided with a slot 310, the slot 310 extends to the rear side of the blade 300, the left side of the slot 310 is located in the limiting gap and abuts against the left top rod 210, and the right side of the slot 310 is located in the limiting gap and abuts against the right top rod 220.

From the above, before the blade 300 is assembled to the handle, the sliding block 230 is slid backwards in the sliding groove, so that the front part of the left ejector rod 210 and the front part of the right ejector rod 220 can be mutually closed, the slot 310 of the blade 300 is pushed into the limit gap, the left side and the right side of the slot 310 are both located in the limit gap and are respectively arranged at two sides of the left ejector rod 210 and the right ejector rod 220, at this time, the sliding block 230 is slid forwards, the through channel limits the rear part of the left ejector rod 210 and the rear part of the right ejector rod 220, so that the left ejector rod 210 and the right ejector rod 220 rotate, the front part of the left ejector rod 210 and the front part of the right ejector rod 220 are mutually far away and respectively abut against the left side and the right side of the slot 310, the sliding block 230 slides forwards, the pushing force of the left ejector rod 210 and the right ejector rod 220 to the left side and the right side of the handle 310 is larger, so that the blade 300 and the handle are mutually fixed, and the blade 300 is very simple to be disassembled from the handle, only need with slider 230 backward slip, remove left ejector pin 210 and right ejector pin 220 to the tight power in top of the left side of slotted hole 310, the right side limit can, consequently, the utility model discloses it is more convenient to installing and removing of blade 300 and handle of a knife, need not difficultly imbed blade 300 on the handle of a knife, reduced operating personnel because misoperation and to self cause the risk of injury, the practicality is higher.

In the above embodiment, the medical staff needs to push the sliding block 230 forward to ensure that the blade 300 is fixed on the handle during use, in this embodiment, in order to improve convenience during use and maintain the relative fixed state between the blade 300 and the handle, a spring 240 is connected between the rear side wall of the sliding block 230 and the rear side wall of the sliding groove, and the sliding block 230 tends to move forward under the elastic force of the spring 240. The spring 240 can push the sliding block 230 forward, so that the top of the left top bar 210 and the top of the right top bar 220 keep tightly pushing against the left side and the right side of the slot 310, and the medical staff is more convenient to use.

In order to improve the smoothness of the sliding block 230 during sliding, the left side wall of the through channel and the right side wall of the through channel gradually get closer from front to back. That is, the left side wall of the through channel and the right side wall of the through channel are both inclined surfaces, and the distance between the left side wall and the right side wall is gradually reduced from front to back, because the rear end of the left top bar 210 and the rear end of the right top bar 220 penetrate through the through channel, the structural design can limit and enlarge the distance between the left top bar 210 and the right top bar 220 in the through channel, and the sliding block 230 is smoother when sliding.

As a further embodiment of the left top bar 210, the top end of the left top bar 210 has an outer supporting section 211, and the left side surface of the outer supporting section 211 and the left side edge of the slot 310 are attached to each other. The outer supporting section 211 abuts against and is attached to the left side edge of the groove hole 310, so that friction between the outer supporting section 211 and the groove hole 310 can be increased, and the fixing structure between the blade 300 and the knife handle is more stable.

In order to enable the fixing structure between the blade 300 and the handle to be more compact, a plurality of tooth grooves are uniformly arranged on the left side surface of the outer support section 211 along the front-back direction, a plurality of clamping teeth are arranged on the left side edge of the slot hole 310 along the front-back direction, the shapes of the clamping teeth are matched with the shapes of the tooth grooves, and at least one clamping tooth is located in the tooth groove. By means of mutual matching of the clamping teeth and the tooth grooves, relative front and back movement between the blade 300 and the cutter handle can be further limited, and structural stability between the blade 300 and the cutter handle is improved.

For the further embodiment of the right top bar 220, the right top bar 220 and the left top bar 210 are in a left-right symmetrical structure, and the right side of the slot 310 and the left side of the slot 310 are in a left-right symmetrical structure. The matching structure of the right top bar 220 and the right side of the slot 310 is the same as the matching structure of the left top bar 210 and the left side of the slot 310, so that the jacking force of the right top bar 220 to the right side of the slot 310 is enhanced.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. A skin draw materials sword which characterized in that: the method comprises the following steps:

handle of a knife, it includes the handle body (100), the handle body (100) extends along the fore-and-aft direction, the front end of the handle body (100) is provided with spacing piece (110) and spacing piece (120) down, go up spacing piece (110) with spacing clearance has between spacing piece (120) down, the preceding terminal surface of the handle body (100) is provided with the blind hole, the blind hole is located go up spacing piece (110) with between spacing piece (120) down, be provided with left ejector pin (210) and right ejector pin (220) along left right direction interval in the blind hole, the front end of left side ejector pin (210) with the front end of right ejector pin (220) all wears out the blind hole and extends to in the spacing clearance, left side ejector pin (210) rotate through first pivot (250) connect in the blind hole, right ejector pin (220) rotate through second pivot (260) connect in the blind hole, the central line of first pivot (250) with the central line of second pivot (260) all along upper and lower direction The handle is characterized in that a sliding groove is formed in the top surface of the handle body (100), the sliding groove is communicated with the blind hole, a sliding block (230) is connected in the sliding groove in a sliding mode, the sliding block (230) can slide in the sliding groove in the front-back direction, a penetrating channel extending in the front-back direction is formed in the sliding block (230), the rear ends of the left ejector rod (210) and the right ejector rod (220) penetrate through the penetrating channel, and the inner diameter of the penetrating channel is smaller than the inner diameter of the blind hole;

the surface of the blade (300) is provided with a slotted hole (310), the slotted hole (310) extends to the rear side edge of the blade (300), the left side edge of the slotted hole (310) is positioned in the limiting gap and abuts against the left ejector rod (210), and the right side edge of the slotted hole (310) is positioned in the limiting gap and abuts against the right ejector rod (220).

2. A skin sampling knife according to claim 1, characterized in that: a spring (240) is connected between the rear side wall of the sliding block (230) and the rear side wall of the sliding chute, and the sliding block (230) has a forward movement tendency under the action of the elastic force of the spring (240).

3. A skin sampling knife according to claim 2, characterized in that: the left side wall of the through channel and the right side wall of the through channel are gradually closed from front to back.

4. A skin sampling knife according to claim 1, characterized in that: the top of left ejector pin (210) has outer section (211) that props, the left surface of outer section (211) that props with the left side limit of slotted hole (310) is laminated each other.

5. A skin sampling knife according to claim 4, characterized in that: the left side of the outer support section (211) is evenly provided with a plurality of tooth sockets along the front-back direction, the left side of the slotted hole (310) is provided with a plurality of clamping teeth along the front-back direction, the clamping teeth are matched with the tooth sockets in shape, and at least one clamping tooth is positioned in the tooth sockets.

6. A skin sampling knife according to claim 5, characterized in that: the right ejector rod (220) and the left ejector rod (210) are of a bilateral symmetry structure, and the right side edge of the slotted hole (310) and the left side edge of the slotted hole (310) are of a bilateral symmetry structure.