CN210903250U

CN210903250U - Dispensing limiting device for mounting tool bit and tool handle in microsurgical scalpel

Info

Publication number: CN210903250U
Application number: CN201921169175.XU
Authority: CN
Inventors: 潘福义; 张强; 刘滨生
Original assignee: Beijing Bohaikangyuan Medical Devices Co ltd
Current assignee: Beijing Bohaikangyuan Medical Devices Co ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-07-03
Anticipated expiration: 2029-07-23

Abstract

The utility model relates to a glue dispensing limiting device for installing a tool bit and a tool handle in a microsurgical knife, which comprises a bottom plate, a vertical plate positioned above the bottom plate, a rectangular sliding block positioned above the bottom plate, two cylindrical guide rails and a plurality of adjusting bolts, wherein a positioning plate is arranged above the sliding block, a positioning seat is arranged above the positioning plate, and a plurality of limiting grooves matched with the tool handle are arranged at the upper part of the positioning seat; the slide block is connected with the guide rail in a sliding mode, a tensioning piece is arranged between the slide block and the vertical plate, guide rail seats are arranged at two ends of the guide rail respectively, screw holes matched with the adjusting bolts are formed in the side wall of the vertical plate, the adjusting bolts are connected with the screw holes in a threaded mode, and the threaded ends of the adjusting bolts are arranged between the vertical plate and the slide block. The adhesive dispensing limiting device for mounting the cutter head and the cutter handle in the microsurgical knife is simple to operate, convenient to use, high in production efficiency, high in yield and good in implementation effect, and errors are not easy to occur in the adhesive dispensing mounting process.

Description

Dispensing limiting device for mounting tool bit and tool handle in microsurgical scalpel

Technical Field

The utility model relates to a tool bit among micro-scalpel and handle of a knife installation are with some adhesive spacing device belongs to micro-scalpel technical field.

Background

The microsurgical knife is mainly used for cutting fine tissues such as microscopic fascia, blood vessels, nerves and the like in fine operations such as neurosurgery, microsurgery and the like.

The conventional structure of the microsurgical knife is shown in fig. 1 and 2, the microsurgical knife 20 comprises a knife head 22 and a knife handle 21, and a gap 211 for accommodating the tail of the knife head 22 is arranged at the front end of the knife handle 21. At present, during the process of assembling the microsurgical knife 20, manual operation is adopted, the head end of the knife head 22 is clamped by a pair of pliers 30 with the width of 3mm, and then the tail part of the knife head 22 is inserted into the gap 211, so that the length of the knife head 22 exposed out of the knife handle 21 is 3mm, as shown in fig. 3, the 3mm has clinical value in the surgical process, and therefore control is needed; the length of the cutter head 22 exposed out of the cutter handle 21 of the microsurgical knife 20 of other types is designed into other values according to requirements; after the cutting tip 22 is exposed to a predetermined length, the cutting tip 22 and the shank 21 are fixed together by glue. The method needs to control the exposed size of the blade and is manually operated, so that the production efficiency is low, errors are easy to occur, and the qualification rate of dispensing assembly is usually not more than 90%.

SUMMERY OF THE UTILITY MODEL

The utility model discloses not enough to prior art exists, provide the tool bit in the microsurgical knife and handle of a knife installation with gluing stop device, concrete technical scheme is as follows:

the dispensing limiting device for mounting the cutter head and the cutter handle in the microsurgical knife is used for clamping and assembling the microsurgical knife, the microsurgical knife comprises the cutter head and the cutter handle, the dispensing limiting device for mounting the cutter head and the cutter handle in the microsurgical knife comprises a bottom plate, a vertical plate positioned above the bottom plate, a rectangular sliding block positioned above the bottom plate, two cylindrical guide rails and a plurality of adjusting bolts, the lower part of the vertical plate is fixedly connected with the bottom plate, a positioning plate is arranged above the sliding block and fixedly connected with the upper part of the sliding block, a positioning seat is arranged above the positioning plate, the lower part of the positioning seat is fixedly connected with the upper part of the positioning plate, and a plurality of limiting grooves matched with the cutter handle are formed in the upper part of the; the sliding block is connected with the guide rail in a sliding mode, a tensioning piece is arranged between the sliding block and the vertical plate, guide rail seats are arranged at two ends of the guide rail respectively, the lower end of each guide rail seat is fixedly connected with the bottom plate, and the end portion of the guide rail is fixedly connected with the upper end of each guide rail seat; the lateral wall of riser is provided with the screw with adjusting bolt assorted, adjusting bolt and screw threaded connection, adjusting bolt's screw thread end sets up between riser and slider.

As an improvement of the above technical scheme, an upright column and a wrench are arranged above the bottom plate, a first connecting plate and a second connecting plate are arranged between the upright column and the slider, the head end of the first connecting plate is hinged with the middle part of the slider, the tail end of the first connecting plate is hinged with the head end of the second connecting plate, the tail end of the second connecting plate is hinged with the upper end of the upright column, and the lower end of the upright column is fixedly connected with the bottom plate; the spanner sets up the outside at the second even board, the head end of spanner and the tail end fixed connection of second even board.

As an improvement of the above technical scheme, the tensioning member is a tension spring, the end of the slider is fixedly provided with a first connecting rod, the end of the vertical plate is fixedly provided with a second connecting rod, one end of the tension spring is fixedly connected with the end of the first connecting rod, and the other end of the tension spring is fixedly connected with the end of the second connecting rod.

As an improvement of the technical scheme, a nut matched with the adjusting bolt is arranged on the outer side of the vertical plate, the nut is arranged outside the screw hole, and the nut is fixedly connected with the vertical plate.

As an improvement of the technical scheme, the side wall of the sliding block is provided with a through hole for the guide rail to pass in and out, a bearing is embedded in the through hole, the bearing sleeve is arranged outside the guide rail, and the guide rail is in clearance fit with the inner ring of the bearing.

As an improvement of the technical scheme, the two ends of the bearing are respectively provided with a clamp spring, and the clamp springs are sleeved outside the guide rail.

As an improvement of the technical scheme, a nylon plate is embedded in the upper portion of the vertical plate and fixedly connected with the vertical plate, and the nylon plate is arranged between the vertical plate and the positioning seat.

As an improvement of the technical scheme, a cuboid block gauge is arranged between the nylon plate and the positioning seat.

Tool bit in the microsurgical knife and handle of a knife installation are with point mucilage binding stop device's easy operation, convenient to use, production efficiency is high, and the point is glued the installation and is difficult for makeing mistakes, and the qualification rate is high, implements effectually.

Drawings

FIG. 1 is a schematic structural view (side view) of a microsurgical knife in the background art;

FIG. 2 is a schematic structural view (in a top view) of a microsurgical knife of the background art;

FIG. 3 is a schematic view of the installation of a knife head and a knife handle in the microsurgical knife of the background art;

FIG. 4 is a schematic structural view of a dispensing and limiting device for mounting a knife head and a knife handle in the microsurgical knife of the present invention;

fig. 5 is a schematic structural view (side view state) of the dispensing and limiting device for mounting the knife head and the knife handle in the microsurgical knife of the present invention;

fig. 6 is the installation schematic diagram of guide rail, bearing, jump ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The dispensing limiting device for mounting the cutter head and the cutter handle in the microsurgical knife is used for clamping and assembling the microsurgical knife 20, as shown in fig. 1 and 2, the microsurgical knife 20 comprises the cutter head 22 and the cutter handle 21, and a gap 211 for accommodating the tail of the cutter head 22 is formed in the front end of the cutter handle 21.

As shown in fig. 4 and 5, the dispensing limiting device for mounting the tool bit and the tool holder in the microsurgical scalpel comprises a horizontally arranged bottom plate 8, a vertical plate 15 positioned above the bottom plate 8, a rectangular sliding block 3 positioned above the bottom plate 8, two cylindrical guide rails 7, and a plurality of adjusting bolts 16 for adjusting the distance between the vertical plate 15 and the rectangular sliding block 3, wherein the lower part of the vertical plate 15 is fixedly connected with the bottom plate 8, a positioning plate 2 is arranged above the sliding block 3, the positioning plate 2 is fixedly connected with the upper part of the sliding block 3, a positioning seat 1 is arranged above the positioning plate 2, the lower part of the positioning seat 1 is fixedly connected with the upper part of the positioning plate 2, and the upper part of the positioning seat 1 is provided with a plurality of limiting grooves matched with the tool; the length direction of the limiting groove is perpendicular to that of the vertical plate 15, the length direction of the vertical plate 15 is parallel to that of the positioning seat 1, the length direction of the positioning seat 1 is parallel to that of the sliding block 3, and the length direction of the guide rail 7 is perpendicular to that of the sliding block 3; the slide block 3 is connected with the guide rail 7 in a sliding manner, a tensioning piece is arranged between the slide block 3 and the vertical plate 15, two ends of the guide rail 7 are respectively provided with a guide rail seat 10, the lower end of the guide rail seat 10 is fixedly connected with the bottom plate 8, and the end part of the guide rail 7 is fixedly connected with the upper end of the guide rail seat 10; the lateral wall of riser 15 is provided with the screw with adjusting bolt 16 assorted, adjusting bolt 16 and screw threaded connection, adjusting bolt 16's screw thread end sets up between riser 15 and slider 3.

Further, a nylon plate 17 is embedded in the upper portion of the vertical plate 15, the nylon plate 17 is fixedly connected with the vertical plate 15, and the nylon plate 17 is arranged between the vertical plate 15 and the positioning seat 1.

Further, a rectangular block gauge 40 is arranged between the nylon plate 17 and the positioning base 1.

The working process of the dispensing limiting device for mounting the cutter head and the cutter handle in the microsurgical knife is as follows: firstly, the handle 21 is placed in a limiting groove in the upper portion of the positioning seat 1, the shape of the limiting groove can be designed into different shapes or structures according to the structure and the shape of the handle 21, and the limiting groove can limit and position the handle 21, so that the handle 21 cannot shake left and right, front and back. The tail of the tool bit 22 is inserted into the gap 211, and after the tool bit 22 is inserted, the instantaneous adhesive is dispensed for curing, so that the tool bit 22 and the tool shank 21 are fixed, and the length of the tool bit 22 exposed out of the tool shank 21 needs to be accurately controllable (+/-0.5 mm). The glue dispensing limiting device for mounting the cutter head and the cutter handle in the microsurgical knife has the functions of determining the extending length of the cutter handle 21 and then dispensing and fixing; when in use, a block gauge 40 with a specified size (blade exposure length) is plugged between the nylon plate 17 and the positioning seat 1, and the thickness of the block gauge 40 is 3 mm; as the sliding block 3 is slidably connected with the guide rail 7, the sliding block 3 can perform translational sliding along the direction defined by the guide rail 7; because the tensioning piece is tightened, the distance between the vertical plate 15 and the positioning seat 1 is 3mm, at this time, if the tail of the cutter head 22 is directly inserted into the gap 211, the operation is inconvenient, the cutter point part of the cutter head 22 is easy to touch the nylon plate 17, although the texture of the nylon plate 17 is soft, the cutter point of the cutter head 22 can be ensured not to be damaged as much as possible, a large number of scratches are easy to generate on the surface of the nylon plate 17 when the nylon plate 17 is touched for a long time, and the subsequent installation accuracy is easy to be influenced when the scratches are deep; then, by rotating the adjusting bolt 16, because the threaded end of the adjusting bolt 16 is arranged between the vertical plate 15 and the sliding block 3, when the adjusting bolt 16 is rotated, the threaded end of the adjusting bolt 16 can prop against the sliding block 3 to slide along the direction limited by the guide rail 7, so as to adjust the distance between the vertical plate 15 and the rectangular sliding block 3, the positioning seat 1 and the positioning plate 2 can be fixedly connected by adopting screws, and the positioning plate 2 and the sliding block 3 can be connected by adopting a pin-fit pin hole manner, so that the distance between the vertical plate 15 and the rectangular sliding block 3 is determined, and the distance between the nylon plate 17 and the positioning seat 1 is also determined; when the distance between the nylon plate 17 and the positioning seat 1 is larger than 3mm, for example, 4mm, the distance between the nylon plate 17 and the positioning seat 1 is larger, so that the tail of the tool bit 22 can be conveniently inserted into the gap 211 in the subsequent process; after the distance between the nylon plate 17 and the positioning seat 1 is determined, the tail of the cutter head 22 is inserted into the gap 211 by using tweezers or other suitable tools, then the adjusting bolt 16 is rotated reversely, at this time, under the tightening of the tensioning piece, the distance between the nylon plate 17 and the positioning seat 1 is continuously reduced to be equal to 3mm, the cutter point of the cutter head 22 can be ensured to be just not contacted with the side wall of the nylon plate 17 at the distance, then instant adhesive is applied to the gap 221 of the cutter handle 21 for fixation, and then the rest of the cutter head 22 and the cutter handle 21 are sequentially fixed. After all the tool bits 22 and the tool holder 21 are fixed by the instant adhesive, the positioning seat 1 can be separated from the nylon plate 17 by pulling the sliding block 3 by hand, and the positioning seat 1 and the positioning plate 2 are taken away from the sliding block 3 to enter the next process for treatment. Wherein, the nylon plate 17 is relative to the scale, and the cutter head of the cutter head 22 is observed from the side just not to contact the nylon plate 17. In order to further guarantee the precision, the adjusting bolt 16 can be selected from an M3.5 model, the thread pitch is 0.35mm, and the requirement of adjusting precision can be completely met.

Further, to facilitate moving the slider 3; an upright column 9 and a wrench 13 are arranged above the bottom plate 8, a first connecting plate 4 and a second connecting plate 5 are arranged between the upright column 9 and the sliding block 3, the head end of the first connecting plate 4 is hinged with the middle part of the sliding block 3, the tail end of the first connecting plate 4 is hinged with the head end of the second connecting plate 5, the tail end of the second connecting plate 5 is hinged with the upper end of the upright column 9, and the lower end of the upright column 9 is fixedly connected with the bottom plate 8; the wrench 13 is arranged outside the second connecting plate 5, and the head end of the wrench 13 is fixedly connected with the tail end of the second connecting plate 5.

When the slider 3 is moved to needs to make the slider 3 keep away from the riser 15, only the wrench 13 needs to be pulled, thereby the head end of the wrench 13 rotates to drive the second connecting plate 5 and the first connecting plate 4 to carry out corresponding actions, and finally the slider 3 is kept away from the riser 15, the operation is simple and convenient, and time and labor are saved.

Further, the tensioning member is a tension spring 6, the end of the slider 3 is fixedly provided with a first connecting rod 31, the end of the vertical plate 15 is fixedly provided with a second connecting rod 151, one end of the tension spring 6 is fixedly connected with the end of the first connecting rod 31, and the other end of the tension spring 6 is fixedly connected with the end of the second connecting rod 151. Under the tightening of extension spring 6, keep the state of tightening up all the time between slider 3 and the riser 15, simultaneously, because extension spring 6 keeps away from slider 3, riser 15, avoid producing the interference.

Further, if the riser 15 is thin in thickness; the outside of riser 15 is provided with and adjusts bolt 16 assorted nut 11, nut 11 sets up the outside at the screw, nut 11 and riser 15 fixed connection. The adjusting bolt 16 is in threaded connection with the nut 11, so that the phenomenon that the adjusting bolt 16 slides at a screw hole due to the fact that the vertical plate 15 is too thin can be avoided.

As shown in fig. 4 and 6, a through hole 14 for the guide rail 7 to pass in and out is formed in the side wall of the slider 3, a bearing 12 is embedded in the through hole 14, the bearing 12 is sleeved outside the guide rail 7, and the guide rail 7 and an inner ring of the bearing 12 are in clearance fit. Compared with the matching of a direct connection hole and a shaft, the friction force is smaller and the bearing 12 is more wear-resistant by adopting a mode of mounting the bearing 12.

Furthermore, clamp springs 18 are respectively arranged at two ends of the bearing 12, and the clamp springs 18 are sleeved outside the guide rail 7. The two circlips 18 play a role in restraining the bearing 12 and have a role in preventing the bearing 12 from falling off.

In the embodiment, the adhesive dispensing limiting device for mounting the cutter head and the cutter handle in the microsurgical knife is simple to operate, convenient to use and high in production efficiency; when the nylon plate 17 and the positioning seat 1 are used, the tool bit 22 and the tool handle 21 in the microsurgical knife 20 can be limited under the matching of other parts, the size of the tool tip in the tool bit 22 exposed out of the tool handle 21 is easily limited and fixed by the nylon plate 17 and the positioning seat 1, the error size deviation in subsequent dispensing is avoided, the dispensing installation between the tool bit 22 and the tool handle 21 is not easy to make an error, the qualified rate of dispensing assembly is more than 98.6%, and the implementation effect is good.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Tool bit and the installation of handle of a knife in the microsurgery sword are with some adhesive limiting device for centre gripping equipment microsurgery sword 20, microsurgery sword 20 includes tool bit (22) and handle of a knife (21), its characterized in that: the dispensing limiting device for mounting the cutter head and the cutter handle in the microsurgical scalpel comprises a bottom plate (8), a vertical plate (15) positioned above the bottom plate (8), a rectangular sliding block (3) positioned above the bottom plate (8), two cylindrical guide rails (7) and a plurality of adjusting bolts (16), wherein the lower part of the vertical plate (15) is fixedly connected with the bottom plate (8), a positioning plate (2) is arranged above the sliding block (3), the positioning plate (2) is fixedly connected with the upper part of the sliding block (3), a positioning seat (1) is arranged above the positioning plate (2), the lower part of the positioning seat (1) is fixedly connected with the upper part of the positioning plate (2), and a plurality of limiting grooves matched with the cutter handle (21) are formed in the upper part of the positioning seat (1); the sliding block (3) is connected with the guide rail (7) in a sliding mode, a tensioning piece is arranged between the sliding block (3) and the vertical plate (15), guide rail seats (10) are arranged at two ends of the guide rail (7) respectively, the lower end of each guide rail seat (10) is fixedly connected with the bottom plate (8), and the end portion of the guide rail (7) is fixedly connected with the upper end of each guide rail seat (10); the lateral wall of riser (15) is provided with the screw with adjusting bolt (16) assorted, adjusting bolt (16) and screw threaded connection, the screw thread end setting of adjusting bolt (16) is between riser (15) and slider (3).

2. The dispensing limiting device for mounting the knife head and the knife handle in the microsurgical knife according to claim 1, which is characterized in that: an upright post (9) and a wrench (13) are arranged above the bottom plate (8), a first connecting plate (4) and a second connecting plate (5) are arranged between the upright post (9) and the sliding block (3), the head end of the first connecting plate (4) is hinged with the middle part of the sliding block (3), the tail end of the first connecting plate (4) is hinged with the head end of the second connecting plate (5), the tail end of the second connecting plate (5) is hinged with the upper end of the upright post (9), and the lower end of the upright post (9) is fixedly connected with the bottom plate (8); spanner (13) set up in the outside of second even board (5), the head end of spanner (13) and the tail end fixed connection of second even board (5).

3. The dispensing limiting device for mounting the knife head and the knife handle in the microsurgical knife according to claim 1, which is characterized in that: the tensioning piece is a tension spring (6), the end part of the sliding block (3) is fixedly provided with a first connecting rod (31), the end part of the vertical plate (15) is fixedly provided with a second connecting rod (151), one end of the tension spring (6) is fixedly connected with the end part of the first connecting rod (31), and the other end of the tension spring (6) is fixedly connected with the end part of the second connecting rod (151).

4. The dispensing limiting device for mounting the knife head and the knife handle in the microsurgical knife according to claim 1, which is characterized in that: the outside of riser (15) is provided with and adjusting bolt (16) assorted nut (11), nut (11) set up the outside at the screw, nut (11) and riser (15) fixed connection.

5. The dispensing limiting device for mounting the knife head and the knife handle in the microsurgical knife according to claim 1, which is characterized in that: the lateral wall of slider (3) is provided with through-hole (14) that supply guide rail (7) business turn over, through-hole (14) inside is inlayed and is equipped with bearing (12), the outside at guide rail (7) is established to bearing (12) cover, be clearance fit between the inner circle of guide rail (7) and bearing (12).

6. The dispensing limiting device for mounting the knife head and the knife handle in the microsurgical knife according to claim 5, which is characterized in that: the two ends of the bearing (12) are respectively provided with a clamp spring (18), and the clamp springs (18) are sleeved outside the guide rail (7).

7. The dispensing limiting device for mounting the knife head and the knife handle in the microsurgical knife according to claim 1, which is characterized in that: the upper portion of riser (15) is inlayed and is equipped with nylon board (17), nylon board (17) and riser (15) fixed connection, nylon board (17) set up between riser (15) and positioning seat (1).

8. The dispensing limiting device for mounting the knife head and the knife handle of the microsurgical knife according to claim 7, which is characterized in that: a cuboid block gauge (40) is arranged between the nylon plate (17) and the positioning seat (1).