CN215534837U - Conveniently-replaced arachnoid knife taking injection needle as knife head - Google Patents
Conveniently-replaced arachnoid knife taking injection needle as knife head Download PDFInfo
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- CN215534837U CN215534837U CN202121774490.2U CN202121774490U CN215534837U CN 215534837 U CN215534837 U CN 215534837U CN 202121774490 U CN202121774490 U CN 202121774490U CN 215534837 U CN215534837 U CN 215534837U
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- arachnoid
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Abstract
The utility model discloses a conveniently-replaced arachnoid knife with an injection needle as a knife head, which comprises a knife handle and a disposable injection needle, wherein the disposable injection needle is arranged at one end of the knife handle; the disposable syringe needle comprises a cutting part, a body part and a bending part which are fixedly connected in sequence, wherein the shape and the size of the bending part are in interference fit with the arc-shaped channel, and the shape and the size of the body part are in interference fit with the horizontal channel; the tip of connecting portion is equipped with the upper cover, and the upper cover outer wall is equipped with the screw thread, and upper cover and connecting portion pass through the nut and connect, and the central point of upper cover puts to open has the through-hole with cylindricality passageway looks adaptation, solves the problem that current arachnoid sword is not convenient for change syringe needle.
Description
Technical Field
The utility model relates to the technical field of surgical cutters, in particular to a conveniently-replaced arachnoid cutter taking an injection needle head as a cutter head.
Background
Present arachnoid sword is many regard as the cutting edge with No. 5 syringe heads for cut the brain inner structure dissection such as arachnoid in neurosurgery micro-operation, the arachnoid sword on the existing market is mostly handle of a knife and the integrative setting of tool bit, when the impaired needs of tool bit are changed, often change whole arachnoid sword, cause the waste, and traditional neurosurgery arachnoid sword on the market is expensive, traditional neurosurgery micro-operation arachnoid sword is mostly thousands to tens of thousands of yuan, patient's economic burden has been increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a conveniently-replaced cobweb knife taking an injection needle as a knife head, and solves the problem that the existing cobweb knife is inconvenient to replace the injection needle.
In order to solve the technical problems, the utility model adopts the following technical scheme: a conveniently-replaced arachnoid knife with an injection needle as a knife head comprises a knife handle and a disposable injection needle, wherein the disposable injection needle is installed at one end of the knife handle, the knife handle comprises a handle part and a connecting part, one end of the connecting part is connected with the handle part, a cylindrical channel is arranged at the end part of the connecting part along the axis and comprises a horizontal channel and an arc-shaped channel, the horizontal channel is horizontally arranged in the connecting part along the length direction, one end of the arc-shaped channel is communicated with the horizontal channel, and the other end of the arc-shaped channel is formed by bending towards the side wall of the connecting part; the disposable syringe needle comprises a cutting part, a body part and a bending part which are fixedly connected in sequence, wherein the shape and the size of the bending part are in interference fit with the arc-shaped channel, and the shape and the size of the body part are in interference fit with the horizontal channel; the lateral wall of connecting portion is equipped with the upper cover, and the upper cover outer wall is equipped with the screw thread, and upper cover and connecting portion pass through the nut and connect, the central point of upper cover puts the through-hole of opening with cylindricality passageway looks adaptation.
According to a further technical scheme, clamping grooves are formed in the left side and the right side of the arc-shaped channel, clamping blocks are arranged on the bending portions, and the size of each clamping block is matched with that of each clamping groove.
The further technical scheme is that a circular ring sleeve is arranged on the outer wall of the trunk part corresponding to the opening of the horizontal channel, and the outer diameter of the circular ring sleeve is larger than the inner diameter of the horizontal channel and the inner diameter of the through hole of the upper cover.
The handle part is provided with anti-slip lines which are mutually crossed.
The diameter of the horizontal channel is matched with the diameter of the trunk part, and the diameter of the bent part is matched with the diameter of the arc-shaped channel.
Compared with the prior art, the utility model has the beneficial effects that:
through setting up the trunk one end and the flexion of disposable injection head respectively in the horizontal channel and the arc passageway of handle of a knife, can fix disposable injection head and conveniently change disposable injection head again, avoid changing whole device because the injection head damages, cause the waste, and simultaneously, disposable injection head low in cost, only need change disposable injection head after the operation, can alleviate economic burden for patient, do not influence surgical instruments's normal use again, good market prospect has, be worth market use.
Drawings
Fig. 1 is a schematic structural diagram of a conveniently replaceable arachnoid knife with an injection needle as a knife head.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic view of the structure of the disposable syringe of the present invention.
FIG. 4 is a schematic view of a connecting portion structure according to the present invention.
In the figure: 1-handle part, 2-connecting part, 3-upper cover, 4-horizontal channel, 5-arc channel, 6-cutting part, 7-trunk part, 8-bending part, 9-nut, 10-clamping groove, 11-clamping block and 12-circular sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to fig. 1-4 and the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Example 1:
the conveniently-replaced arachnoid knife with the injection needle as the knife head comprises a knife handle and a disposable injection needle, wherein the disposable injection needle is installed at one end of the knife handle, the knife handle comprises a handle part 1 and a connecting part 2, one end of the connecting part 2 is connected with the handle part 1, a cylindrical channel is arranged at the end part of the connecting part 2 along the axis, the cylindrical channel comprises a horizontal channel 4 and an arc-shaped channel 5, the horizontal channel 4 is horizontally arranged in the connecting part 2 along the length direction, one end of the arc-shaped channel 5 is communicated with the horizontal channel 4, and the other end of the arc-shaped channel is formed by bending towards the side wall of the connecting part 2; the disposable syringe needle comprises a cutting part 6, a body part 7 and a bending part 8 which are fixedly connected in sequence, wherein the shape and the size of the bending part 8 are in interference fit with the arc-shaped channel 5, and the shape and the size of the body part 7 are in interference fit with the horizontal channel 4; the lateral wall of connecting portion 2 is equipped with upper cover 3, and the 3 outer walls of upper cover are equipped with the screw thread, and upper cover 3 and connecting portion 2 pass through nut 9 and connect, the central point of upper cover 3 puts the through-hole of opening with the 5 looks adaptations of cylindricality passageway.
The working principle of the utility model is as follows: the cobweb knife comprises a knife handle and a disposable injection head, the knife handle comprises a handle part 1 and a connecting part 2, when a person uses the cobweb knife, the person holds the handle part 1, one end of the connecting part 2 is connected with the handle part 1, the side wall of the connecting part 2 is provided with an upper cover 3, the outer wall of the upper cover 3 is provided with threads, the upper cover 3 is connected with the connecting part 2 through a nut 9, the end part of the connecting part 2 is provided with a cylindrical channel along the axis, the cylindrical channel comprises a horizontal channel 4 and an arc-shaped channel 5, one end of a body part 7 of the disposable injection head and a bent part 8 are respectively arranged in the horizontal channel 4 and the arc-shaped channel 5 of the knife handle, so that the disposable injection head can be fixed and the disposable injection head can be conveniently replaced, avoid changing whole device because the syringe needle damages, upper cover 3 and connecting portion 2 pass through nut 9 fixed connection, further prescribe a limit to the stability that first syringe needle one end was installed in the cylindricality passageway.
Example 2:
the left and right sides of arc passageway 5 is equipped with draw-in groove 10, be equipped with fixture block 11 on the flexion 8, the size of fixture block 11 and the big or small adaptation of draw-in groove 10, during the installation, the fixture block 11 of flexion 8 is installed in draw-in groove 10, makes whole device when using, and disposable injection head can not increase disposable injection head's stability at the horizontal direction round trip movement.
Example 3:
and the outer wall of the trunk part 7 corresponding to the opening of the horizontal channel 4 is provided with a circular sleeve 12, and the outer diameter of the circular sleeve 12 is larger than the inner diameter of the horizontal channel 4 and the inner diameter of a through hole on the upper cover 3.
Example 4:
handle portion 1 is equipped with anti-skidding line, anti-skidding line is intercrossing's strip, and when anti-skidding line was used for increasing the handheld handle portion 1 of personnel, prevented that personnel's hand has sweat or other liquid and takes place the condition of skidding.
Example 5:
the diameter of the horizontal channel 4 is matched with the diameter of the body part 7, the diameter of the bending part 8 is matched with the diameter of the arc-shaped channel 5, so that the bending part 8 and the body part 7 can be just placed in the arc-shaped ring and the horizontal channel 4, and the phenomenon that when the bending part 8 and the body part 7 are placed, a left gap is too large, and the disposable injection needle head swings left and right or back and forth is avoided.
Although the utility model has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (5)
1. The utility model provides a convenient cobweb membrane sword of changing with syringe needle as tool bit, includes handle of a knife and disposable syringe needle, disposable syringe needle installs in handle of a knife one end, its characterized in that: the knife handle comprises a handle part (1) and a connecting part (2), one end of the connecting part (2) is connected with the handle part (1),
a cylindrical channel is arranged at the end part of the connecting part (2) along the axis and comprises a horizontal channel (4) and an arc-shaped channel (5), the horizontal channel (4) is horizontally arranged in the connecting part (2) along the length direction, one end of the arc-shaped channel (5) is communicated with the horizontal channel (4), and the other end of the arc-shaped channel is formed by bending towards the side wall of the connecting part (2); the disposable syringe needle comprises a cutting part (6), a body part (7) and a bending part (8) which are fixedly connected in sequence, wherein the shape and the size of the bending part (8) are in interference fit with the arc-shaped channel (5), and the shape and the size of the body part (7) are in interference fit with the horizontal channel (4);
the lateral wall of connecting portion (2) is equipped with upper cover (3), and upper cover (3) outer wall is equipped with the screw thread, and upper cover (3) and connecting portion (2) pass through nut (9) and connect, the central point of upper cover (3) puts the through-hole of opening with cylindricality passageway looks adaptation.
2. A readily replaceable needle-tipped arachnoid knife according to claim 1, characterized in that: the arc-shaped channel (5) is characterized in that clamping grooves (10) are formed in the left side and the right side of the arc-shaped channel, clamping blocks (11) are arranged on the bending portion (8), and the size of each clamping block (11) is matched with that of each clamping groove (10).
3. A readily replaceable needle-tipped arachnoid knife according to claim 2, characterized in that: and a circular ring sleeve (12) is arranged on the outer wall of the trunk part (7) corresponding to the opening of the horizontal channel (4), and the outer diameter of the circular ring sleeve (12) is larger than the inner diameter of the horizontal channel (4) and the inner diameter of the through hole in the upper cover (3).
4. A readily replaceable needle-tipped arachnoid knife according to claim 1, characterized in that: the handle part (1) is provided with anti-slip lines which are mutually crossed.
5. A readily replaceable needle-tipped arachnoid knife according to claim 1, characterized in that: the diameter of the horizontal channel (4) is matched with the diameter of the trunk part (7), and the diameter of the bent part (8) is matched with the diameter of the arc-shaped channel (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121774490.2U CN215534837U (en) | 2021-08-02 | 2021-08-02 | Conveniently-replaced arachnoid knife taking injection needle as knife head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121774490.2U CN215534837U (en) | 2021-08-02 | 2021-08-02 | Conveniently-replaced arachnoid knife taking injection needle as knife head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215534837U true CN215534837U (en) | 2022-01-18 |
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ID=79830545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121774490.2U Active CN215534837U (en) | 2021-08-02 | 2021-08-02 | Conveniently-replaced arachnoid knife taking injection needle as knife head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215534837U (en) |
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2021
- 2021-08-02 CN CN202121774490.2U patent/CN215534837U/en active Active
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