CN214805162U

CN214805162U - Telescopic medical scalpel

Info

Publication number: CN214805162U
Application number: CN202120357439.5U
Authority: CN
Inventors: 王雯
Original assignee: Nanjing Pukou Central Hospital
Current assignee: Nanjing Pukou Central Hospital
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-11-23
Anticipated expiration: 2031-02-08

Abstract

The utility model discloses a scalable medical scalpel, which comprises a blade, the handle of a knife, a housing, the lag, push away the button, compression spring, cylinder and extension spring, the blade links to each other alone with the handle of a knife, the handle of a knife is arranged in the spout of casing, the end-to-end connection and the handle of a knife face looks vertically cylinder of handle of a knife, the cylinder other end pushes away the button through compression spring connection, and push away a part and expose the casing, the handle of a knife is connected to compression spring one end, the casing is connected to one end, the blade that the lag is arranged in the casing surface stretches out the end, can promote as required and push away the button, drive the blade along casing direction translation, push away to the interlude and press button fixed position, it is terminal to push away the stroke, push away the button can automatic locking, push away the button and can contract under extension spring effect and contract automatically. Advantage, the utility model discloses simple structure, safe and reliable, convenient to use can promote as required and push away the button, expose suitable blade length and operate, effectively avoid the unexpected fish tail of scalpel or the unexpected circumstances such as damage that drop.

Description

Telescopic medical scalpel

Technical Field

The utility model relates to a medical articles for use protection field, specifically are scalable medical scalpel.

Background

The medical scalpel is a special tool for cutting human or animal body tissues, is an important surgical tool indispensable in surgical operations, and is very sharp during the operation process, so that a sharp injury is easily caused during the handover process, such as: the scalpel falls down to damage the blade, or scratches the body of medical staff, even the scalpel is mistakenly scratched by the blade in an operation, so that tendons are cut off, and serious medical accidents are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that sharp scalpel probably leads to medical personnel's health injury because of there being no protection device when clinical use, to this problem, provides a scalable medical scalpel, utilizes expanding spring's flexible characteristic and buckle and skewed tooth complex fixed mode, easily realizes operation, the change to the scalpel, can release the blade as required during the use, in the retractable device when not using, the utility model discloses simple structure, safe and reliable, convenient to use.

The technical scheme of the utility model is realized through following mode: a telescopic medical scalpel comprises a blade, a scalpel handle, a shell, a protecting sleeve, a push button, a compression spring, a cylinder and an extension spring. The blade is connected with a knife handle, the knife handle is arranged in a chute of the shell, the knife handle is connected with the push button through a compression spring and a cylinder in the direction vertical to the motion direction of the blade, the knife handle is also connected with the shell through an extension spring in the motion direction of the blade, the blade is a thin sheet type blade with a long hole on a knife body, the thin sheet type blade is connected with the knife handle through the long hole, and one end of the blade, far away from a knife tip, is an inclined plane; the extension spring is a spring with hooks at two ends, wherein one end of the extension spring is connected with the knife handle, and the other end of the extension spring is connected with the shell; the cutter comprises a cutter handle, a shell, a blade support, a blade holder and a blade, wherein the shell consists of a lower shell and an upper shell, one end of the shell is closed, the other end of the shell is open, the closed end of the shell is used for being connected with a hook at one end of the blade, the closed end of the shell is connected with the lower shell into a whole, two rows of symmetrical long and thin bosses are arranged in the lower shell to form a guide chute of the cutter handle, a sliding contact surface is arranged in the chute, two rows of bosses are provided with two sections of lower oblique teeth, the bosses, four uniformly distributed bolts are also arranged in the lower shell and are fixed with the lower shell into a whole, two rows of long bosses in the length direction, long bosses are provided with long holes, four uniformly distributed bolt holes, the four bolt holes are arranged in the upper shell, the four bolt holes are arranged in the positions and the upper shell, the upper shell is provided with a slot groove close to the end of the extended end of the blade; the knife handle is positioned in the sliding groove of the lower shell, one end of the knife handle connected with the blade is provided with a boss for installing the blade, the knife handle is also provided with an inclined plane corresponding to the knife handle at the position contacted with the inclined plane end of the blade, the other end of the knife handle is provided with a hook groove for accommodating a hook of an extension spring, and a straight hole for installing a cylinder is arranged at the part close to the end; the whole protective sleeve is conical, the large end of the protective sleeve is sleeved at one end of the opening of the shell, and the small end of the protective sleeve is a channel for stretching the blade, so that on one hand, the protective sleeve can prevent dust and improve the attractiveness of the device, and on the other hand, the protective sleeve can also be used as a shell external fixing device, so that the whole device is more stably connected; the push button is connected with the cylinder through a compression spring and an upper shell, the push button is sleeved on one end of the cylinder, penetrates through a long hole of the upper shell and is exposed out of one part of the shell, the plane ends expanded on two sides of the push button are contacted with the upper shell, the reverse sides of the plane ends on the two sides are provided with upper oblique teeth which can be matched with the lower oblique teeth, the size and the shape of the upper oblique teeth correspond to those of the lower oblique teeth on the boss, the plane ends are provided with a buckle along the extension direction of the blade, and the shape of the buckle is matched with that of a clamping groove on the upper shell; the compression spring is positioned between the push button and the knife handle and is used for tightly attaching the plane ends at the two sides of the push button to the inner wall of the shell by the spring.

The utility model discloses the technical scheme who further injects is:

the blade, the knife handle and the cylinder are all made of metal materials, and the shell, the protective sleeve and the push button are all made of hard plastics, so that the design aim is to consider the integral weight of the device and the portability of use; the surface that the sliding contact face in handle of a knife and the lower casing contacted is the plane, and its design purpose is the frictional resistance when being favorable to reducing the handle of a knife and removing, uses more smoothly.

Four bolts on the casing down are transition fit with the bolt hole cooperation relation that the last casing corresponds, and its purpose is the convenience of the stability and the working of plastics dismouting of casing connection about considering.

The distance between the reverse sides of the planes at the two sides of the push button and the knife handle is smaller than the natural length of the compression spring, namely, the compression spring is in a compression state under the action of no other external force, and the design aim is that the push button can be more stable and firmer when a buckle of the push button is matched with the clamping groove; the helical tooth of boss and the helical tooth of pushing away the button have the clearance in perpendicular blade direction of motion, the helical tooth on pushing away the button is the state of separating each other under no external force interference promptly with the helical tooth on the spout, its purpose is to produce unnecessary resistance when avoiding the handle of a knife to drive the blade retraction, set up the purpose of helical tooth cooperation and considered in the in-service use, the blade need not all to stretch out sometimes, can stretch out required length and press and push away the button, thereby make the helical tooth mutually support and lock this position, let practical use more nimble convenient.

The casing blind end is equipped with the hook groove that holds extension spring one end hook, and the extension spring direction of stretching out and drawing back is on a parallel with the flexible direction of blade, makes extension spring direction of stretching out and drawing back the same with blade moving direction, and its design purpose is better fixed extension spring, and reduces the resistance in other directions that the nonparallel error of spring and blade brought in the motion process.

The surface of one end of the upper shell close to the closed end is provided with uniform scales. The design aim is to facilitate the measurement of the cutting length in the operation process, and compared with a graduated scale carved on a blade, the measuring danger is reduced, and the operation process is facilitated.

Compared with the prior art, the utility model beneficial effect who has is:

the technical scheme of the utility model, through the fixed mode of extension spring flexible fixed and skewed tooth cooperation with the buckle draw-in groove for the scalpel blade can stretch out and draw back the selection according to actual need, when not using, the effectual risk of avoiding the scalpel that causes sharp ware of retracting blade, and the blade is changed convenient, uses safe and reliable, and the quality is light, makes things convenient for medical staff to use.

Drawings

Fig. 1 is a schematic view of the appearance structure of the present invention.

Fig. 2 is a schematic view of the internal structure of the present invention.

Fig. 3 is a schematic view of the appearance structure of the push button of the present invention.

Fig. 4 is the schematic view (disassembled) of the blade and the handle structure of the present invention.

Fig. 5 is a schematic view of the lower housing structure of the present invention.

Fig. 6 is a schematic view of the upper housing structure of the present invention.

Detailed Description

The technical solution in the embodiment of the present invention will be described in detail with reference to fig. 1 to 6 in the embodiment of the present invention.

Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present invention, and furthermore, the terms "first", "second", and "third" are only used for descriptive purposes and are not intended to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, and connected between two elements, and those skilled in the art can understand the specific meaning of the terms in the present invention in specific situations.

Example 1

The retractable medical scalpel provided by the embodiment comprises a blade 1, a scalpel handle 2, a shell 3, a protective sleeve 4, a push button 5, a compression spring 6, a cylinder 7 and an extension spring 8, as shown in fig. 1 and 2.

The whole protection sleeve 4 is conical, the large end of the protection sleeve is sleeved at one end of the opening of the shell 3, the small end of the protection sleeve is a telescopic channel of the blade 1, the protection sleeve has the functions of preventing dust, the whole attractiveness of the device is improved, and the protection sleeve can also be used as an external fixing device of the shell, so that the whole device is connected more compactly and stably.

As shown in fig. 4, the blade 1 is made of a titanium alloy material, the handle 2 is made of a stainless steel material, the blade 1 is designed to be easy to maintain and disassemble by selecting a metal material with high strength and rigidity, a long groove is formed in the middle of a conductor of the blade 1, the tail end of the blade 1 is an inclined surface, the handle corresponding to the inclined surface is also arranged on the inclined surface for positioning the blade and the handle, a boss 2a matched with the handle is arranged on the handle 2, a gap is formed between the boss 2a and the handle 2 body, the long groove of the blade 1 is convenient to install and disassemble along the boss 2b, and no other redundant connecting pieces exist, so that the blade is stable and reliable.

One end of the knife handle 2, which is far away from the blade 1, is provided with a hook groove 2b for accommodating a hook at one end of the extension spring, and a straight hole 2c is also formed close to the end, so that the connection stability and convenience are considered, the straight hole 2c is formed into a threaded hole, one section of the cylinder 7, which is matched with the cylinder, is provided with an external thread, and the two sections are fixed through the threads. The sliding surface of the knife handle 2 is a smooth plane, so that the friction resistance is reduced, and the smoothness of use is enhanced.

As shown in fig. 5 and 6, the lower case 3a and the upper case 3b constitute a case 3 made of hard plastic designed in consideration of the lightness and easy disassembly of the whole device. The closed end of the shell 3 is connected with the lower shell 3a into a whole, the end is also provided with a hook groove 3a3 for accommodating a hook at one end of an extension spring 8, the extension spring 8 is in a slight extension state without interference of other external force, the extension direction of the extension spring 8 is parallel to the extension direction of the blade 1, the design aim is to better fix the extension spring 8 and reduce the resistance in other directions caused by the non-parallel error of the spring and the blade in the movement process, the extension spring 8 is a known product in the technical field and can be directly purchased and obtained, furthermore, a plurality of manufacturers selling the extension springs currently exist, the technical scheme is not limited to a specific manufacturer, two rows of symmetrical long and thin bosses 3a1 are arranged in the lower shell 3a to form a guide chute of the knife handle 2, a sliding contact surface 3a2 in the groove is formed by two long and thin parallel small planes of the knife handle, the design aim is to reduce the contact area with the sliding plane of the knife 2, further reducing the frictional resistance when moving, being equipped with two sections of lower skewed teeth 3a4 on two rows of bosss 3a1, still being equipped with four equipartition bolts in the lower casing 3a, it is solid as an organic whole with lower casing 3 a.

As shown in fig. 1 and 6, the upper housing 3b is open in the length direction, and has a long hole 3b2 for limiting sliding of the push button 5, four uniformly distributed pin holes are provided in the upper housing 3b, the positions and sizes of the four pins correspond to those of the lower housing 3a, and the pins and the pin holes are in transition fit, so that the device is compactly fitted and is easy to disassemble and assemble, the upper housing 3b is provided with a clamping groove 3b1 at the end near the extension of the blade 1 for being fitted with the buckle 5a of the push button 5, and the surface of the end of the upper housing 3b near the closed end of the housing 3 is provided with uniform scales of 0-45 mm.

As shown in fig. 2 and 3, the push button 5 is sleeved on one end of the cylinder 7, and a part of the housing 3 is exposed through the slot hole 3b2 of the upper housing 3b, the two side-expanded plane ends of the push button are contacted with the inner wall of the upper housing 3b, the reverse side of the two side plane ends is provided with an upper oblique tooth 5b which can be matched with the lower oblique tooth 3a4, the size and the shape of the upper oblique tooth correspond to those of the lower oblique tooth 3a4, and a gap is formed between the upper and lower oblique teeth in the direction perpendicular to the movement direction of the blade, i.e. the upper and lower oblique teeth are in a normal separation state without other external force, so as to avoid unnecessary resistance generated when the knife handle is retracted, the oblique teeth are arranged to be matched in order to take into consideration that the blade 1 can extend out by a required length and press the push button 5 in the actual use process, so that the oblique teeth are matched with each other to lock the position, thereby making the actual use more convenient and flexible, on the two side plane ends of the push button 5, be equipped with a buckle 5a along blade 1 flexible direction, correspond with draw-in groove 3b1 of upper casing 3b for automatic fixation when blade 1 pushes out completely, push away the part that button 5 exposes upper casing 3b, be equipped with anti-skidding stripe 5c with the place that the finger contacted, frictional force when increasing the finger and promoting makes the device use more convenient.

The distance between the reverse surfaces of the two side planes of the push button 5 and the knife handle 2 is smaller than the natural length of the compression spring, namely, the compression spring 6 is in a compression state under the action of no other external force, the design aim is that the buckle 5a of the push button 5 can be more stable and firm when matched with the clamping groove, the compression spring 6 is a known product in the technical field and can be directly purchased and obtained, and furthermore, manufacturers selling the compression spring at present have a lot, and the technical scheme does not limit specific manufacturers.

The using process of the embodiment is as follows:

before the device is used, firstly, the threaded end of a cylinder 7 is connected with a threaded hole at the tail end of a cutter handle 2, then the cutter handle 2 is arranged in a sliding guide groove of a lower shell 3a, one end of an extension spring 8 is arranged in a hook groove 2b of the cutter handle 2, the other end of the extension spring is arranged in a hook groove 3a3 of the lower shell 3a, then a compression spring is sleeved on the cylinder 7, a push button 5 is pressed on the cylinder 7, the direction of a buckle 5a is kept to be the same as the telescopic direction of a blade 1, then, an upper shell 3b and a lower shell 3a are assembled, so that a bolt is completely matched with a bolt hole, two side planes of the push button 5 are abutted against the inner wall of the upper shell 3b, the push button 5 can move in a long hole 3b2, then the push button is pushed to the tail end of a stroke, the buckle 5a is clamped into a clamping groove 3b1, at the moment, the middle long groove of the blade 1 is arranged in the cutter handle 2 along a boss 2a, and the ends of the cutter handle are aligned, then, the push button 5 is pressed down, the knife handle 2 retracts under the action of the extension spring 8, and finally the protection sleeve 4 is installed, and the blade 1 can freely stretch and retract by paying attention to the directions of the large end and the small end. The assembled blade can be used after being assembled, the length of the blade 1 can be pushed out according to actual requirements, and when the blade 1 is completely pushed out for use or replaced, the push button 5 is pushed to the tail end of the stroke and is locked by the buckle 5 a; when the push button 5 does not need to be fully extended, the push button 5 can be pushed to a proper position, and the push button 5 is pressed, so that the upper and lower inclined teeth are matched to block the telescopic motion, and the position is locked for use and operation; the blade 1 is retracted into the housing 3 during non-use or transfer handover.

Above embodiment only is for explaining the utility model discloses a technical thought can not be injectd with this the utility model discloses a protection scope, all according to the utility model provides a technical thought, any change of doing on technical scheme basis all falls into the utility model discloses within the protection scope.

Claims

1. A telescopic medical scalpel is characterized in that: the blade-type knife comprises a blade (1), a knife handle (2), a shell (3), a protective sleeve (4), a push button (5), a compression spring (6), a cylinder (7) and an extension spring (8), wherein the blade (1) is connected with the knife handle (2), the knife handle (2) is arranged in a sliding groove of the shell (3), the knife handle (2) is connected with the push button (5) through the compression spring (6) and the cylinder (7) in the direction perpendicular to the movement direction of the blade (1), the knife handle (2) is also connected with the shell (3) through the extension spring (8) in the direction along the movement direction of the blade (1), the blade (1) is a thin-sheet-type knife handle with a long groove on a knife body, the thin-sheet-type knife handle is connected with the knife handle (2) through the long groove, and one end, far away from a knife tip, of the blade (1) is an inclined plane; the extension spring (8) is a spring with hooks at two ends, one end of the extension spring is connected with the knife handle (2), and the other end of the extension spring is connected with the shell (3); the shell (3) consists of a lower shell (3 a) and an upper shell (3 b), one end of the shell (3) is closed, the other end is open, the closed end is used for being connected with a hook at one end of the extension spring (8), and the closed end is connected with the lower shell (3 a) into a whole, two rows of symmetrical slender bosses (3 a 1) are arranged in the lower shell (3 a) to form a guide chute of the knife handle (2), a sliding contact surface (3 a 2) is arranged in the chute, two sections of lower oblique teeth (3 a 4) are arranged on the two rows of bosses (3 a 1), four evenly distributed bolts are also arranged in the lower shell (3 a), is fixed with the lower shell (3) into a whole, both ends of the upper shell (3 b) in the length direction are open, a long hole (3 b 2) is formed on the upper shell, four bolt holes are uniformly distributed in the upper shell (3 b), the positions and the sizes of the bolt holes correspond to those of the four bolts of the lower shell (3 a), and a clamping groove (3 b 1) is formed at one end, close to the extension end of the blade (1), of the upper shell (3 b); the knife handle (2) is positioned in a sliding groove of the lower shell (3 a), a boss (2 a) is arranged at one end of the knife handle connected with the blade (1) and used for installing the blade (1), a corresponding inclined plane is also arranged at the position of the knife handle (2) contacted with the inclined plane end of the blade (1), a hook groove (2 b) for accommodating a hook of a tension spring (8) is arranged at the other end of the knife handle (2), and a straight hole (2 c) used for installing a cylinder (7) is arranged at the position close to the end; the whole protective sleeve (4) is conical, the large end of the protective sleeve is sleeved at one end of the opening of the shell (3), and the small end of the protective sleeve is a telescopic channel of the blade (1); the push button (5) is connected with the cylinder (7) through a compression spring (6) and an upper shell (3 b), the push button (5) is sleeved on one end of the cylinder (7), penetrates through a long hole (3 b 2) of the upper shell (3 b) and is exposed out of one part of the shell (3), the plane ends expanded on two sides of the push button are contacted with the upper shell (3 b), the reverse surfaces of the plane ends on the two sides are provided with upper oblique teeth (5 b) matched with the lower oblique teeth (3 a 4), the size and the shape of the push button correspond to those of the lower oblique teeth (3 a 4) on the boss (3 a 1), the plane end is provided with a buckle (5 a) along the extension direction of the blade (1), and the shape of the push button is matched with that of a clamping groove (3 b 1) on the upper shell (3 b); the compression spring (6) is positioned between the push button (5) and the knife handle (2).

2. The retractable medical scalpel of claim 1, wherein: the blade (1), the knife handle (2) and the cylinder (7) are all made of metal materials; the shell (3), the protective sleeve (4) and the push button (5) are all made of hard plastic materials.

3. The retractable medical scalpel of claim 1, wherein: the surface of the tool holder (2) which is in contact with the sliding contact surface (3 a 2) in the lower shell (3 a) is a plane.

4. The retractable medical scalpel of claim 1, wherein: the matching relationship of the four bolts on the lower shell (3 a) and the corresponding bolt holes of the upper shell (3 b) is transition matching.

5. The retractable medical scalpel of claim 1, wherein: the distance between the reverse surfaces of the planes on the two sides of the push button (5) and the knife handle (2) is less than the natural length of the compression spring (6); the oblique teeth of the boss (3 a 1) and the oblique teeth of the push button (5) have clearance in the direction vertical to the moving direction of the blade (1).

6. The retractable medical scalpel of claim 1, wherein: the closed end of the shell (3) is provided with a hook groove (3 a 3) for accommodating a hook at one end of the extension spring (8), and the extension direction of the extension spring (8) is parallel to the extension direction of the blade (1).

7. The retractable medical scalpel of claim 1, wherein: the surface of one end of the upper shell (3 b) close to the closed end is provided with uniform scales (3 b 3).