CN117481766B - Quick assembly disassembly clamping structure of ablation needle and piercing depth thereof - Google Patents
Quick assembly disassembly clamping structure of ablation needle and piercing depth thereof Download PDFInfo
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- CN117481766B CN117481766B CN202410001545.8A CN202410001545A CN117481766B CN 117481766 B CN117481766 B CN 117481766B CN 202410001545 A CN202410001545 A CN 202410001545A CN 117481766 B CN117481766 B CN 117481766B
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- 238000002679 ablation Methods 0.000 title claims abstract description 55
- 230000009021 linear effect Effects 0.000 claims abstract description 36
- 230000033001 locomotion Effects 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000002595 magnetic resonance imaging Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002675 image-guided surgery Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
- A61B17/3439—Cannulas with means for changing the inner diameter of the cannula, e.g. expandable
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3476—Powered trocars, e.g. electrosurgical cutting, lasers, powered knives
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
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- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Otolaryngology (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a rapid disassembly and assembly clamping structure of an ablation needle and a puncture device thereof, and relates to the technical field of medical appliances, comprising a linear driving mechanism, a needle clamping mechanism and a mounting plate; the needle clamping mechanism comprises an ablation needle quick assembly disassembly clamping structure and a needle tip clamping assembly; the clamping part comprises a connecting plate and a pressing plate hinged with one side of the top surface of the connecting plate, the pressing plate is locked with the top surface of the connecting plate through a cover plate screw, and a clamping channel is formed between the pressing plate and the connecting plate; the ablation needle assembly includes a housing having a reduced outer diameter section clamped in the clamping channel, and an ablation needle with a trailing end disposed within the housing. The linear action end of the linear driving mechanism is fixedly connected with the connecting plate, the needle point clamping assembly is fixed with the end of the supporting part of the linear driving mechanism, and the needle head of the ablation needle penetrates through the needle point clamping assembly. The invention solves the defects of the traditional puncture device, designs the shell at the tail end for the ablation needle, can be manually assembled and disassembled, and is reliable in installation.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a rapid disassembly and assembly clamping structure of an ablation needle and a puncture device thereof.
Background
Medical puncture surgery plays a key role in the treatment of diseases and in the diagnosis. The traditional puncture device has some problems, including inability to adapt to ablation needles of different types, need to be manually assembled and disassembled, and are far away from the target position during puncture, thus limiting the accuracy and efficiency of the operation. Furthermore, conventional lancing devices are unable to accommodate changes in position caused by the patient's breath, which can lead to tears and complications at the surgical site.
Existing image guided surgery penetration robots often have limitations in terms of penetration accuracy and variety. They are difficult to accommodate for different types of ablation needles and require a significant amount of time for the physician to manually install and adjust the robots, which not only increases the procedure time, but can also cause discomfort to the patient.
Therefore, it is a need for a person skilled in the art to provide an innovative puncture device that can accommodate different types of ablation needles, has a manual loading and unloading function, and can improve the puncture accuracy, particularly under MRI guidance.
Disclosure of Invention
In view of the above, the present invention provides a rapid disassembly and assembly clamping structure for an ablation needle and a puncture device thereof, which aims to solve the above technical problems.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
an ablation needle quick assembly disassembly clamping structure, includes: a grip and ablation needle assembly;
The clamping part comprises a connecting plate and a pressing plate hinged with one side of the top surface of the connecting plate, one end of the pressing plate, which is far away from the hinged side, is locked with the other side of the top surface of the connecting plate through a cover plate screw, and a clamping channel is formed between the pressing plate and the connecting plate;
the ablation needle assembly includes a housing having a reduced outer diameter section clamped in the clamping channel, and an ablation needle with a trailing end disposed in the housing.
Through the technical scheme, the quick disassembly and assembly clamping structure of the ablation needle designs the shell at the tail end of the ablation needle, the shell at the tail end of the ablation needle is fixed by using the hinge structure formed by the connecting plate and the pressing plate, and the disassembly and assembly are realized by only screwing the cover plate screw, so that the quick disassembly and assembly clamping structure can be assembled and disassembled manually and is reliable in installation.
Preferably, in the above-mentioned quick disassembly and assembly clamping structure for an ablation needle, the housing includes a front housing and a rear housing which are engaged and clamped, and the tail end of the ablation needle is clamped and limited in a cavity formed by the front housing and the rear housing. The shell can be assembled fast through preceding shell and back shell, realizes the quick, the reliable centre gripping of tail end to the ablation needle.
Preferably, in the above-mentioned quick disassembly and assembly clamping structure for an ablation needle, the connecting plate is rotationally connected with the pressing plate through a pin shaft to form a hinged side, and the end head of the pin shaft is limited to be separated through a split washer. The pin shaft and the split retainer ring are matched in structure, so that the connection of the pin shaft can be met, and the split retainer ring is stable and reliable and convenient to install.
The invention also provides a puncture device, comprising: a linear drive mechanism, a needle clamping mechanism and a mounting plate connected with the linear drive mechanism;
the needle clamping mechanism comprises an ablation needle quick assembly disassembly clamping structure and a needle tip clamping assembly;
The linear action end of the linear driving mechanism is fixedly connected with the connecting plate, the needle point clamping assembly is fixed with the end of the supporting part of the linear driving mechanism, and the needle head of the ablation needle passes through the needle point clamping assembly;
the mounting plate is fixedly connected with the supporting part of the linear driving mechanism.
Through the technical scheme, the defect of the traditional puncture device is overcome, the ablation needle can be assembled and disassembled manually, the ablation needle is closer to an affected part through connection and driving cooperation of the linear driving mechanism and the rapid disassembly and assembly clamping structure of the ablation needle and the needle tip clamping assembly, the effective stroke is longer, and the accuracy and the efficiency of an operation are improved.
Preferably, in the puncture device, the linear driving mechanism uses a motor as driving power, uses a guide rail as the supporting part, and drives a screw rod to rotate by the motor, so as to control a nut serving as a linear movement end to perform a reciprocating linear displacement movement on the guide rail. The screw rod and nut are adopted for driving, so that the structure stability is strong, and the driving is simple and reliable.
Preferably, in the above puncture device, the needle tip clamping assembly includes a needle tip clamping seat fixed on a top surface of the end head of the guide rail, a bayonet is formed on the top surface of the needle tip clamping seat, a needle tip holder is clamped in the bayonet, and a needle hole for the ablation needle to pass through is formed in the needle tip holder. The needle tip holder can be fast clamped and disassembled with the bayonet, and the assembly is convenient.
Preferably, in the puncture device, one end of the mounting plate is fixedly connected to a side wall of the guide rail, and the other end of the mounting plate has a positioning and mounting portion. The mounting panel is used for the installation to holistic structure, and the mounting panel sets up in one side, the manual operation of the opposite side of being convenient for.
Compared with the prior art, the invention discloses the rapid disassembly and assembly clamping structure of the ablation needle and the puncture device thereof, which have the following beneficial effects:
1. the puncturing device solves the defects of the traditional puncturing device and has the capability of adapting to the real-time use during MRI scanning.
2. The rapid disassembly and assembly clamping structure of the ablation needle provided by the invention designs the shell at the tail end of the ablation needle, the shell at the tail end of the ablation needle is fixed by using the hinge structure formed by the connecting plate and the pressing plate, and the disassembly and assembly are realized by only screwing the cover plate screw, so that the rapid disassembly and assembly clamping structure can be assembled and disassembled manually and is reliable in installation.
3. The ablation needle of the invention is closer to the affected area and has a longer effective stroke, which helps to improve the accuracy and efficiency of the procedure, particularly in an MRI-guided procedure.
4. The invention also has the capability of adapting to the position change caused by the respiration of the patient, avoids the tearing of the operation position and reduces the complication risk of the patient.
5. The invention is expected to improve the diversity and adaptability of the puncture device, provide higher level of operation control and safety, and has obvious effect in particular to the operation under the guidance of MRI.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic top view of a puncture device according to embodiment 1 of the present invention;
FIG. 2 is a schematic view showing the structure of the puncture device according to embodiment 1 of the present invention;
FIG. 3 is an exploded view of the puncture device according to embodiment 1 of the present invention;
Fig. 4 is a schematic structural view of an ablation needle quick assembly disassembly holding structure and a needle tip holding assembly according to embodiment 1 of the present invention;
FIG. 5 is an exploded view of the structure of FIG. 4;
fig. 6 is a schematic structural view of a linear driving mechanism according to embodiment 1 of the present invention;
FIG. 7 is an exploded view of the structure of FIG. 6;
FIG. 8 is a schematic view showing the structure of a mounting plate according to embodiment 1 of the present invention;
FIG. 9 is a schematic view of another angle of the mounting plate of embodiment 1 provided by the present invention;
FIG. 10 is a side view of the rail and nut engagement of embodiment 1 provided by the present invention;
FIG. 11 is a cross-sectional view of A-A of FIG. 10;
FIG. 12 is a side view of the nut of example 1 provided by the present invention;
FIG. 13 is a cross-sectional view of B-B of FIG. 12;
FIG. 14 is a cross-sectional view of C-C of FIG. 12;
FIG. 15 is a schematic view showing the structure of a nut of embodiment 1 according to the present invention;
FIG. 16 is an exploded view of the puncture device according to embodiment 2 of the present invention;
Fig. 17 is an exploded view of the linear driving mechanism of embodiment 2 provided by the present invention;
FIG. 18 is a schematic view showing the structure of a nut according to embodiment 2 of the present invention;
FIG. 19 is a cross-sectional view of the nut of example 2 provided by the present invention;
FIG. 20 is a side view of the rail and nut engagement of embodiment 2 provided by the present invention;
FIG. 21 is a cross-sectional view of D-D of FIG. 20;
FIG. 22 is a schematic view showing the structure of a mounting plate according to embodiment 2 of the present invention;
FIG. 23 is a bottom view of the guide rail of embodiment 2 provided by the present invention;
fig. 24 is a sectional view of E-E of fig. 23.
Wherein:
100-needle clamping mechanism; 200-a linear driving mechanism; 300-mounting plate;
101-an ablation needle; 102-cover plate screws; 103-pressing plates; 104-opening check ring; 105-front housing; 106-a rear housing; 107-pin shafts; 108-connecting plates; 109-first screw; 110-a second screw; 111-needle tip holder; 112-a needle point clamping seat;
201-bearing seat; 202-flange bearings; 203-a nut; 204-a lead screw; 205-flange bearings; 206-a guide rail; 207-fourth screw; 208-motor; 209-a housing; 210-a third screw;
20301-positioning clamping surface six; 20302-flanks; 20303-positioning clamping face seven; 20304-positioning clamping face eight;
20601-positioning surface one; 20602-locating clamping surface one; 20603-locating surface two; 20604-locating face three; 20605-locating clamping surface two; 20606-locating face four; 20607-locating face five; 20608-locating clamping face three; 20609-locating clamping face four;
301-positioning surface six; 302, positioning surface seven; 303-positioning clamping surface five; 304-screw holes; 305-positioning surface eight; 306-positioning face nine; 307—positioning face ten; 308-positioning face eleven; 309-clamping surface; 310-positioning clamping face nine.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 5, an embodiment of the present invention discloses a puncturing device, comprising: a linear driving mechanism 200, a needle clamping mechanism 100 connected to the linear driving mechanism 200, and a mounting plate 300;
The needle clamping mechanism 100 includes an ablation needle quick assembly and disassembly clamping structure and a needle tip clamping assembly;
the linear action end of the linear driving mechanism 200 is fixedly connected with the connecting plate 108, the needle tip clamping assembly is fixed with the end of the supporting part of the linear driving mechanism 200, and the needle head of the ablation needle 101 passes through the needle tip clamping assembly;
The mounting plate 300 is fixedly connected to a support portion of the linear driving mechanism 200.
Referring to fig. 4 and 5, the ablation needle quick assembly disassembly clamping structure comprises: a grip and ablation needle assembly;
The clamping part comprises a connecting plate 108 and a pressing plate 103 hinged with one side of the top surface of the connecting plate 108, one end of the pressing plate 103 away from the hinged side is locked with the other side of the top surface of the connecting plate 108 through a cover plate screw 102, and a clamping channel is formed between the pressing plate 103 and the connecting plate 108;
The ablation needle assembly includes a housing having a reduced outer diameter section clamped in a clamping channel, and an ablation needle 101 disposed with its trailing end within the housing.
In order to further optimize the technical scheme, the shell comprises a front shell 105 and a rear shell 106 which are in involution joint, and the tail end of the ablation needle 101 is clamped and limited in a cavity formed by the front shell 105 and the rear shell 106.
In order to further optimize the technical scheme, the connecting plate 108 and the pressing plate 103 are rotationally connected through the pin shaft 107 to form a hinged side, and the end head of the pin shaft 107 is limited to be separated through the split retaining ring 104.
As can be seen, the head of the cover screw 102 is larger than the head of a conventional screw, facilitating manual screwing.
The variable diameter section formed by the front shell 105 and the rear shell 106 is a variable diameter cylinder, and after the pressing plate 103 and the connecting plate 108 are folded, a cylindrical hole surface is formed, and the rear part of the ablation needle 101 can be clamped by contacting with the cylindrical surface of the part with the smaller diameter of the shell.
In order to further optimize the technical scheme, the needle tip clamping assembly comprises a needle tip clamping seat 112 fixed on the top surface of the end head of the guide rail 206, a bayonet is formed on the top surface of the needle tip clamping seat 112, a needle tip clamp 111 is clamped in the bayonet, and a needle hole for the ablation needle 101 to pass through is formed in the needle tip clamp 111.
To further optimize the above technical solution, one end of the mounting plate 300 is fixedly connected to a side wall of the guide rail 206, and the other end of the mounting plate 300 has a positioning and mounting portion.
Referring to fig. 6 and 7, the linear driving mechanism 200 uses a motor 208 as driving power, uses a guide rail 206 as a supporting part, and drives a screw 204 to rotate through the motor 208, so as to control a nut 203 as a linear motion end to perform a reciprocating linear displacement motion on the guide rail 206.
Example 1:
In the present embodiment, the linear driving mechanism 200 specifically includes: bearing housing 201, flange bearing 202, nut 203, lead screw 204, flange bearing 205, guide rail 206, and motor 208.
The bearing housing 201 is fixed to the guide rail 206 by the second screw 110; the flange bearing 202 is arranged on the bearing seat 201, the lead screw 204 is in threaded connection with the screw 203, one end of the lead screw 204 is arranged on the flange bearing 202, and the other end of the lead screw is arranged on the motor 208 through the flange bearing 205; the guide rail 206 is mounted to the motor 208 by a fourth screw 207.
The bottom surface of the nut 203 is exposed to the guide rail 206, the connection plate 108 is located above the guide rail 206, and one side of the connection plate 108 has a bending part, and the bending part bypasses the guide rail 206 and is fixedly connected with the bottom surface of the nut 203.
The needle tip holder 112 is secured to the rail 206 by a second screw 110,
The connection plate 108 is fixed to the guide rail 206 by a first screw 109.
Referring to fig. 10 and 11, the guide rail 206 includes: positioning surface one 20601, positioning clamping surface one 20602, positioning surface two 20603, positioning surface three 20604, positioning clamping surface two 20605, positioning surface four 20606, positioning surface five 20607, positioning clamping surface three 20608 and positioning clamping surface four 20609;
referring to fig. 12 to 15, the nut 203 includes: a positioning clamping surface six 20301, a threaded surface 20302 and a positioning clamping surface seven 20303; the threaded hole is located on the rectangular bulge side.
When the nut 203 is matched with the guide rail 206, the positioning clamping surface six 20301, the positioning clamping surface seven 20303 and the positioning clamping surface eight 20304 are in contact with the guide rail 206, and the thread surface 20302 and the screw 204 are in threaded fit to realize transmission.
The positioning clamping surface six 20301 is designed to be a part of protrusion, as shown in fig. 15, so that the contact area with the guide rail 206 can be reduced, and the friction resistance can be reduced.
Referring to fig. 8 and 9, the connection plate 300 includes: positioning surface six 301, positioning surface seven 302, positioning clamping surface five 303, screw hole 304, positioning surface eight 305 and positioning surface nine 306; the positioning surface nine 306 is a concave circular counter bore cylindrical surface.
When the connecting plate 300 is mounted on the guide rail, the guide rail 206 is inserted from the horizontal side, the positioning surface six 301 is contacted with the positioning surface one 20601, the positioning surface seven 302 is contacted with the positioning clamping surface one 20602, and the positioning clamping surface five 303 is contacted with the positioning surface two 20603, so that the mounting is realized.
Example 2:
Referring to fig. 16 to 21, in this embodiment, the bottom surface of the nut 203 is exposed to the guide rail 206, the top surface of the guide rail 206 is provided with a sliding avoidance groove, the nut 203 is located inside the guide rail 206, the connection plate 108 is connected with the nut 203 through a screw, and the screw passes through the sliding avoidance groove.
The drive device 200 further comprises a housing 209. The housing 209 is mounted on the rail 206 by a third screw 210.
In this embodiment, the threaded hole of the nut is located on the six 20301 side of the positioning clamping surface.
Referring to fig. 22 to 24, the positioning surface nine 306 is a convex cylindrical surface.
The connecting plate 300 is slidably mounted from the bottom up and is fixed to the guide rail by screws, so that the third positioning surface 20604 is in contact with the eleventh positioning surface 308, the fourth positioning surface 20606 is in contact with the tenth positioning surface 307, the fifth positioning surface 20607 is in contact with the clamping surface 309, and the second positioning clamping surface 20605 is in contact with the ninth positioning clamping surface 310.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. A lancing device, comprising: a linear drive mechanism (200), and a needle clamping mechanism (100) and a mounting plate (300) connected to the linear drive mechanism (200);
The needle clamping mechanism (100) comprises an ablation needle quick assembly disassembly clamping structure and a needle tip clamping assembly;
The quick assembly disassembly clamping structure of ablation needle includes: a grip and ablation needle assembly;
The clamping part comprises a connecting plate (108) and a pressing plate (103) hinged with one side of the top surface of the connecting plate (108), one end of the pressing plate (103) away from the hinged side is locked with the other side of the top surface of the connecting plate (108) through a cover plate screw (102), and a clamping channel is formed between the pressing plate (103) and the connecting plate (108);
The ablation needle assembly includes a housing having a reduced outer diameter section clamped within the clamping channel, and an ablation needle (101) with a trailing end disposed within the housing;
The shell comprises a front shell (105) and a rear shell (106) which are in involution and clamping connection, and the tail end of the ablation needle (101) is clamped and limited in a cavity formed by the front shell (105) and the rear shell (106);
The diameter-changing section formed by the front shell (105) and the rear shell (106) is a diameter-changing cylinder, and after the pressing plate (103) and the connecting plate (108) are folded, a cylindrical hole surface is formed, and the tail of the ablation needle (101) can be clamped by contacting with a cylindrical surface of a part with a smaller diameter of the shell;
The linear action end of the linear driving mechanism (200) is fixedly connected with the connecting plate (108), the needle point clamping assembly is fixed with the end of the supporting part of the linear driving mechanism (200), and the needle head of the ablation needle (101) passes through the needle point clamping assembly;
the mounting plate (300) is fixedly connected with the supporting part of the linear driving mechanism (200);
The linear driving mechanism (200) takes a motor (208) as driving power, takes a guide rail (206) as the supporting part, drives a screw rod (204) to rotate through the motor (208), and controls a screw nut (203) serving as a linear motion end to do reciprocating linear displacement motion on the guide rail (206);
The needle point clamping assembly comprises a needle point clamping seat (112) fixed on the top surface of the end head of the guide rail (206), a bayonet is formed on the top surface of the needle point clamping seat (112), a needle point clamp (111) is clamped in the bayonet, and a needle hole for the ablation needle (101) to pass through is formed in the needle point clamp (111);
the bottom surface of the nut (203) is exposed out of the guide rail (206), the connecting plate (108) is located above the guide rail (206), one side of the connecting plate (108) is provided with a bending part, and the bending part bypasses the guide rail (206) and is fixedly connected with the bottom surface of the nut (203).
2. A puncture device according to claim 1, characterized in that the connection plate (108) and the pressure plate (103) are rotatably connected by means of a pin (107) forming a hinge side, the end of the pin (107) being limited in its removal by means of a split washer (104).
3. A puncture device according to claim 1, characterized in that one end of the mounting plate (300) is fixedly connected to a side wall of the guide rail (206), and the other end of the mounting plate (300) is provided with a positioning mounting part.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410001545.8A CN117481766B (en) | 2024-01-02 | 2024-01-02 | Quick assembly disassembly clamping structure of ablation needle and piercing depth thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410001545.8A CN117481766B (en) | 2024-01-02 | 2024-01-02 | Quick assembly disassembly clamping structure of ablation needle and piercing depth thereof |
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| CN117481766B true CN117481766B (en) | 2024-05-10 |
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