CN214300077U - Operating handle for micromanipulation tube and micromanipulation device - Google Patents

Operating handle for micromanipulation tube and micromanipulation device Download PDF

Info

Publication number
CN214300077U
CN214300077U CN202022375460.6U CN202022375460U CN214300077U CN 214300077 U CN214300077 U CN 214300077U CN 202022375460 U CN202022375460 U CN 202022375460U CN 214300077 U CN214300077 U CN 214300077U
Authority
CN
China
Prior art keywords
hole
shell
connector
rod
micromanipulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202022375460.6U
Other languages
Chinese (zh)
Inventor
李平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Pinzhi Medical Device Co ltd
Original Assignee
Guangzhou Pinzhi Medical Device Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Pinzhi Medical Device Co ltd filed Critical Guangzhou Pinzhi Medical Device Co ltd
Priority to CN202022375460.6U priority Critical patent/CN214300077U/en
Application granted granted Critical
Publication of CN214300077U publication Critical patent/CN214300077U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

An operating handle and a micromanipulation device for a micromanipulation tube, which relate to the field of embryo bioengineering; the movable rod is arranged in the shell and is connected with the shell in a sliding manner, a connector with an inner cavity is arranged at the bottom of the shell, and the top of the inner cavity is connected with the movable rod; the connecting structure component comprises an installation part and a joint part which are connected with the connector, the joint part is a conical joint with the outer diameter gradually reduced from top to bottom, a through hole which is through along the axial direction is formed in the connecting structure component, the through hole comprises a first through hole and a second through hole which are sequentially communicated from top to bottom, and the inner cavity is communicated with the second through hole. The utility model discloses movable rod and shell relative motion to the accurate control liquid input volume is realized to the piston mode, and operating handle can be used for connecting the micro-operation pipe that has the connector and do not have the glass material of connector through connection structure, and the commonality is strong.

Description

Operating handle for micromanipulation tube and micromanipulation device
Technical Field
The utility model belongs to embryo bioengineering field, concretely relates to operating handle and micromanipulation device for micromanipulation tube.
Background
Assisted reproduction refers to a technology for making sterile couples pregnant by adopting medical auxiliary means, and comprises two major technologies of artificial insemination, in vitro fertilization-embryo transplantation and derivation.
The micro-operation of the assisted reproduction technology needs to use a micro-operation tube, and the operation handles of the micro-operation tube on the market at present are of a silica gel air bag type and a piston type; the connection mode with the micromanipulation tube is that the micromanipulation tube is connected through a connector or directly matched and connected with an operation handle; the existing air bag type operating handle has the defect that the liquid inlet and outlet amount is difficult to accurately control after the control reaction, and the existing piston type operating handle only can be used for being connected with a plastic material micro-operating pipe and is lack of universality.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a micromanipulation tube operating handle, which realizes the accurate control of the liquid feeding and discharging amount in a piston mode, can be used for connecting a micromanipulation tube made of glass material with or without a connector, and has strong universality;
the second purpose of the utility model is to provide a micromanipulation device using the above-mentioned operating handle.
The purpose of the utility model is realized by adopting the following technical scheme:
an operating handle for a micromanipulation tube, which comprises a movable rod, a shell and a connecting structural member,
a movable rod is arranged in the shell and is connected with the shell in a sliding manner, a connector with an inner cavity is arranged at the bottom of the shell, and the top of the inner cavity is connected with the movable rod;
the connection structure component comprises an installation part and a joint part which are connected with the connector, the joint part is a conical joint with the outer diameter gradually reduced from top to bottom, a through hole which is through along the axial direction is formed in the connection structure component, the through hole comprises a first through hole and a second through hole which are sequentially communicated from top to bottom, the connector is inserted into the first through hole, the shell is connected with the connection structure component, and the inner cavity is communicated with the second through hole.
Further, the inside O type circle that is equipped with of first through-hole, when the connector with be connected the binding member locking cooperation, the lower extreme butt of O type circle and connector.
Further, the movable rod includes mobile jib, slider and piston rod, the lower extreme and the piston rod of mobile jib are connected, the mobile jib lateral wall is connected with the slider, the spout has been seted up to the wall of shell, the slider is connected with the spout and both are sliding connection.
Further, mobile jib outer wall cover is equipped with the elastic component, the upper end of elastic component with locate the fixture block butt on the mobile jib, the lower extreme of elastic component and the inner wall butt of shell.
Further, the movable rod still includes two rod structure, two rod structure include that first minute pole and second divide the pole, first minute pole and second divide the bottom of pole to pass through connection platform fixed connection, it is connected with the mobile jib to connect the platform, the slider is located the outside of first minute pole, the top that the second divides the pole is equipped with the block.
Further, the first branch rod and the second branch rod are kept in a separated state, and the first branch rod is deflected by 1-15 degrees towards the direction away from the second branch rod by taking the connecting platform as a center.
Further, the installation department outside cover of connection structure is equipped with lock nut, the lateral wall of shell is equipped with the screw thread, lock nut passes through threaded connection with the shell.
A micromanipulation device comprises the operating handle for the micromanipulation tube and the micromanipulation tube, wherein the micromanipulation tube is a straight needle type operating tube or a connector type operating tube, the straight needle type operating tube is inserted into the connecting structural member along a second through hole, and the straight needle type operating tube penetrates through the second through hole to be in sealing connection with an O-shaped ring inside the first through hole; the operation tube with the connector is matched and connected with the joint part of the connecting structural member through the connector.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses a micro-manipulation tube operating handle, shell provide the holding power, and movable rod and shell relative motion to the accurate control liquid input volume is realized to the piston mode, and operating handle can be used for connecting the micro-manipulation tube that has the connector and does not have the glass material of connector through connection structure, and the commonality is strong.
Drawings
Fig. 1 is a front view of an operating handle for a micromanipulation tube according to the present invention.
Fig. 2 is a sectional view of the present invention taken along line a-a' of fig. 1.
Fig. 3 is a partial enlarged view of fig. 2 in the present invention.
Fig. 4 is a schematic structural diagram of the housing of fig. 1 in the present invention.
Fig. 5 is an exploded view of the operating handle of fig. 1 with the outer shell removed.
Fig. 6 is a schematic structural view of the connecting structure member of fig. 5 according to the present invention.
Fig. 7 is a schematic structural view of a micromanipulator in example 1 of the present invention.
Fig. 8 is a schematic structural view of a micromanipulator in embodiment 2 of the present invention.
In the figure: 1. a housing; 11. a chute; 12. a thread; 13. a connector; 2. a movable rod; 21. a main rod; 22. a first branch rod; 23. a slider; 24. a second branch rod; 25. capping; 26. A clamping block; 27. a piston rod; 3. connecting the structural members; 31. a first through hole; 32. a second through hole; 33. an installation part; 34. a joint portion; 4. an O-shaped ring; 5. locking the nut; 6. an elastic member; 7. a straight needle type operation tube; 8. a connector-equipped operating tube; 81. a connector; 82. and (4) operating the tube.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
As shown in fig. 1 to 6, an operating handle for a micromanipulation tube, comprising a movable bar 2, a housing 1 and a connecting structural member 3,
a movable rod 2 is arranged in the shell 1, the movable rod 2 is connected with the shell 1 in a sliding mode, a connector 13 with an inner cavity is arranged at the bottom of the shell 1, and the top of the inner cavity is connected with the movable rod 2;
the connecting structural member 3 comprises an installation part 33 and a joint part 34 which are connected with the connecting head 13, wherein the joint part 34 is a conical joint of which the outer diameter is gradually reduced from top to bottom; connect the inside through-hole that link member 3 is equipped with along the axial and link up, the through-hole includes from last first through-hole 31 and the second through-hole 32 that down communicates in proper order, inside connector 13 inserted first through-hole 31, make shell 1 be connected with connecting link member 3, the inner chamber with second through-hole 32 intercommunication.
The operating handle can be used for connecting the glass micro-operation tube with or without the connector through the connecting structural member 3, and the universality is strong.
Further, the inside O type circle 4 that is equipped with of first through-hole 31, when connector 13 and the locking cooperation of connecting the binding member 3, O type circle 4 and the lower extreme butt of connector 13. When the micro-operation tube is connected with the glass micro-operation tube without the connector, the firmness and the sealing performance are improved, and meanwhile, the sealing performance between the first through hole 31 and the connecting head 13 is improved.
Further, the movable rod 2 includes a main rod 21, a slider 23 and a piston rod 27, the lower end of the main rod 21 is connected with the piston rod 27, the side wall of the main rod 21 is connected with the slider 23, the wall surface of the housing 1 is provided with a sliding groove 11, the slider 23 is connected with the sliding groove 11, and the two are in sliding connection. The movement of the movable rod 2 is driven by sliding the slider 23 on the runner 11.
Further, the outer wall of the main rod 21 is sleeved with an elastic element 6, the upper end of the elastic element 6 is abutted against a clamping block 26 arranged on the main rod 21, and the lower end of the elastic element 6 is abutted against the inner wall of the housing 1. The restoring force of the elastic piece 6 can reset the movable rod 2.
Further, the movable rod 2 further comprises a double-rod structure, the double-rod structure comprises a first branch rod 22 and a second branch rod 24, the bottoms of the first branch rod 22 and the second branch rod 24 are fixedly connected through a connecting table, the connecting table is connected with the main rod 21, the sliding block 23 is located on the outer side of the first branch rod 22, and a cap 25 is arranged at the top of the second branch rod 24.
Further, the first branch lever 22 is kept away from the second branch lever 24, and the first branch lever 22 is deflected by 1 ° to 15 ° with respect to the connecting table in a direction away from the second branch lever 24. First minute pole 22 has certain elasticity activity space, and first minute pole 22 leans out makes slider 23 keep outside stress, makes things convenient for the sliding operation, reduces materials, and is lighter more.
Further, the mounting part 33 of the connecting structural member 3 is sleeved with a lock nut 5, the outer side wall of the housing 1 is provided with a thread 12, and the lock nut 5 is connected with the housing 1 through the thread 12. The locking nut 5 is connected with the shell 1 through the threads 12, so that the firmness of connection of the connecting structural member 3 and the shell 1 is improved, and the reduction of sealing performance is avoided when the operating pipe is replaced.
A micromanipulation apparatus comprises the operating handle for a micromanipulation tube and the micromanipulation tube, wherein the micromanipulation tube is a straight needle type operating tube or a connector type operating tube, the straight needle type operating tube is inserted into the connecting structural member 3 along the second through hole 32, and the straight needle type operating tube passes through the second through hole 32 and is connected with the O-shaped ring 4 in the first through hole 31 in a sealing way; the connector-equipped operating tube is fittingly connected to the joint portion 34 of the connecting structure 3 by a connector.
In the case of the example 1, the following examples are given,
as shown in FIG. 7, a micromanipulation apparatus comprising the manipulation handle for a micromanipulation tube and the straight needle-type manipulation tube 7,
as shown in fig. 1-7, the operating handle for the micromanipulation tube comprises a movable rod 2, a shell 1 and a connecting structural member 3, wherein the movable rod 2 is installed inside the shell 1, the movable rod 2 is slidably connected with the shell 1, a connector 13 with an inner cavity is arranged at the bottom of the shell 1, and the top of the inner cavity is connected with the movable rod 2;
the movable rod 2 comprises a main rod 21, a sliding block 23 and a piston rod 27, the lower end of the main rod 21 is connected with the piston rod 27, the side wall of the main rod 21 is connected with the sliding block 23, the wall surface of the shell 1 is provided with a sliding groove 11, the sliding block 23 is connected with the sliding groove 11, and the sliding block and the sliding groove are in sliding connection. The movement of the movable rod 2 is driven by sliding the slider 23 on the runner 11. The outer wall cover of mobile jib 21 is equipped with elastic component 6, the upper end of elastic component 6 with locate the fixture block 26 butt on the mobile jib 21, the lower extreme of elastic component 6 and the inner wall butt of shell 1, the elastic component 6 restoring force enables movable rod 2 to reset. The movable rod 2 further comprises a double-rod structure, the double-rod structure comprises a first branch rod 22 and a second branch rod 24, the bottoms of the first branch rod 22 and the second branch rod 24 are fixedly connected through a connecting table, the connecting table is connected with the main rod 21, the sliding block 23 is located on the outer side of the first branch rod 22, and a cap 25 is arranged at the top of the second branch rod 24; the first branch lever 22 and the second branch lever 24 are kept in a separated state, and the first branch lever 22 is deflected 5 ° in a direction away from the second branch lever 24 with the connecting table as a center.
Connect the inside through-hole that link up along the axial that is equipped with of knot component 3, the through-hole includes from last first through-hole 31 and the second through-hole 32 that down communicates in proper order, inside connector 13 inserted first through-hole 31, make shell 1 be connected with connecting knot component 3, the inner chamber with second through-hole 32 intercommunication, connecting knot component 3 includes installation department 33 and joint portion 34, joint portion 34 is the taper joint that the external diameter down gradually reduces from last. The inside O type circle 4 that is equipped with of first through-hole 31, when connector 13 and 3 closedown cooperations of connection structure, the lower extreme butt of O type circle 4 and connector 13. When the micro-operation tube is connected with the glass micro-operation tube without the connector, the firmness and the sealing performance are improved, and meanwhile, the sealing performance between the first through hole 31 and the connecting head 13 is improved.
The installation part 33 outside cover of connecting the structural component 3 is equipped with lock nut 5, the lateral wall of shell 1 is equipped with screw thread 12, lock nut 5 passes through screw thread 12 with shell 1 and is connected. The locking nut 5 is connected with the shell 1 through the threads 12, so that the firmness of connection of the connecting structural member 3 and the shell 1 is improved, and the reduction of sealing performance is avoided when the operating pipe is replaced.
The use method of the operating handle for the micromanipulation tube comprises the following steps:
s1, connecting the micromanipulation tube with the connecting structural member 3 so that the second through hole 32 communicates with the internal passage of the micromanipulation tube; the micro-operation tube is a straight needle type operation tube 7, when the straight needle type operation tube 7 is connected with the connecting structural member 3, the straight needle type operation tube 7 is inserted into the connecting structural member 3 along the second through hole 32, and the straight needle type operation tube 7 penetrates through the second through hole 32 to be in sealing connection with the O-shaped ring 4 in the first through hole 31;
s2, controlling the slide block 23 to move relatively in the slide groove 11, so that the movable rod 2 moves correspondingly relative to the shell 1, and the space of the inner cavity changes correspondingly, thereby controlling the liquid to enter and exit the micro-operation tube.
The embodiment realizes the accurate control of the liquid inlet and outlet in a piston mode, and can be used for connecting a glass micromanipulation tube without a connector.
In the case of the example 2, the following examples are given,
as shown in FIG. 8, a micromanipulation apparatus comprising the manipulating handle for a micromanipulation tube and the connector-equipped manipulating tube 8,
as shown in fig. 1-6 and 8, the operating handle for the micromanipulation tube comprises a movable rod 2, a shell 1 and a connecting structural member 3, wherein the movable rod 2 is installed inside the shell 1, the movable rod 2 is connected with the shell 1 in a sliding manner, a connector 13 with an inner cavity is arranged at the bottom of the shell 1, and the top of the inner cavity is connected with the movable rod 2;
the movable rod 2 comprises a main rod 21, a sliding block 23 and a piston rod 27, the lower end of the main rod 21 is connected with the piston rod 27, the side wall of the main rod 21 is connected with the sliding block 23, the wall surface of the shell 1 is provided with a sliding groove 11, the sliding block 23 is connected with the sliding groove 11, and the sliding block and the sliding groove are in sliding connection. The movement of the movable rod 2 is driven by sliding the slider 23 on the runner 11. The outer wall cover of mobile jib 21 is equipped with elastic component 6, the upper end of elastic component 6 with locate the fixture block 26 butt on the mobile jib 21, the lower extreme of elastic component 6 and the inner wall butt of shell 1, the elastic component 6 restoring force enables movable rod 2 to reset. The movable rod 2 further comprises a double-rod structure, the double-rod structure comprises a first branch rod 22 and a second branch rod 24, the bottoms of the first branch rod 22 and the second branch rod 24 are fixedly connected through a connecting table, the connecting table is connected with the main rod 21, the sliding block 23 is located on the outer side of the first branch rod 22, and a cap 25 is arranged at the top of the second branch rod 24; the first branch lever 22 and the second branch lever 24 are kept in a separated state, and the first branch lever 22 is deflected 5 ° in a direction away from the second branch lever 24 with the connecting table as a center.
Connect the inside through-hole that link up along the axial that is equipped with of knot component 3, the through-hole includes from last first through-hole 31 and the second through-hole 32 that down communicates in proper order, inside connector 13 inserted first through-hole 31, make shell 1 be connected with connecting knot component 3, the inner chamber with second through-hole 32 intercommunication, connecting knot component 3 includes installation department 33 and joint portion 34, joint portion 34 is the taper joint that the external diameter down gradually reduces from last. The inside O type circle 4 that is equipped with of first through-hole 31, when connector 13 and 3 closedown cooperations of connection structure, the lower extreme butt of O type circle 4 and connector 13. When the micro-operation tube is connected with the glass micro-operation tube without the connector, the firmness and the sealing performance are improved, and meanwhile, the sealing performance between the first through hole 31 and the connecting head 13 is improved.
The installation part 33 outside cover of connecting the structural component 3 is equipped with lock nut 5, the lateral wall of shell 1 is equipped with screw thread 12, lock nut 5 passes through screw thread 12 with shell 1 and is connected. The locking nut 5 is connected with the shell 1 through the threads 12, so that the firmness of connection of the connecting structural member 3 and the shell 1 is improved, and the reduction of sealing performance is avoided when the operating pipe is replaced.
The use method of the operating handle for the micromanipulation tube comprises the following steps:
s1, connecting the micromanipulation tube with the connecting structural member 3 so that the second through hole 32 communicates with the internal passage of the micromanipulation tube; the micro-operation tube is a connector-equipped operation tube 8, when the connector-equipped operation tube 8 is connected with the connecting structural member 3, the operation tube 82 is correspondingly connected with the second through hole 32, and the concave conical joint of the connector 81 is matched and connected with the joint part 34 of the connecting structural member 3.
S2, controlling the slide block 23 to move relatively in the slide groove 11, so that the movable rod 2 moves correspondingly relative to the shell 1, and the space of the inner cavity changes correspondingly, thereby controlling the liquid to enter and exit the micro-operation tube.
The embodiment realizes accurate control of liquid inlet and outlet in a piston mode, and can be used for connecting a micromanipulation tube with a connector.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (8)

1. An operating handle for a micromanipulation tube, characterized in that: comprises a movable rod, a shell and a connecting structural member,
a movable rod is arranged in the shell and is connected with the shell in a sliding manner, a connector with an inner cavity is arranged at the bottom of the shell, and the top of the inner cavity is connected with the movable rod;
the connection structure component comprises an installation part and a joint part which are connected with the connector, the joint part is a conical joint with the outer diameter gradually reduced from top to bottom, a through hole which is through along the axial direction is formed in the connection structure component, the through hole comprises a first through hole and a second through hole which are sequentially communicated from top to bottom, the connector is inserted into the first through hole, the shell is connected with the connection structure component, and the inner cavity is communicated with the second through hole.
2. The manipulating handle for a micromanipulation tube according to claim 1, wherein: the inside O type circle that is equipped with of first through-hole, when the connector was locked the fit with the connection structure spare, the lower extreme butt of O type circle and connector.
3. The manipulating handle for a micromanipulation tube according to claim 1, wherein: the movable rod comprises a main rod, a sliding block and a piston rod, the lower end of the main rod is connected with the piston rod, the side wall of the main rod is connected with the sliding block, a sliding groove is formed in the wall surface of the shell, and the sliding block is connected with the sliding groove and is in sliding connection with the sliding groove.
4. The manipulating handle for a micromanipulation tube according to claim 3, wherein: the mobile jib outer wall cover is equipped with the elastic component, the upper end of elastic component with locate the fixture block butt on the mobile jib, the lower extreme of elastic component and the inner wall butt of shell.
5. The manipulating handle for a micromanipulation tube according to claim 3, wherein: the movable rod still includes two rod structure, two rod structure include that first minute pole and second divide the pole, first branch pole and second divide the bottom of pole to pass through connection platform fixed connection, it is connected with the mobile jib to connect the platform, the slider is located the outside of first minute pole, the top that the second divides the pole is equipped with the block.
6. The manipulating handle for a micromanipulation tube according to claim 5, wherein: the first branch rod and the second branch rod are kept in a separated state, and the first branch rod deflects 1-15 degrees towards the direction away from the second branch rod by taking the connecting platform as the center.
7. The manipulating handle for a micromanipulation tube according to claim 1, wherein: the mounting part outside cover of connection structure is equipped with lock nut, the lateral wall of shell is equipped with the screw thread, lock nut passes through threaded connection with the shell.
8. A micromanipulation device, comprising: an operating handle and a micromanipulation tube for a micromanipulation tube according to any one of claims 1 to 7, which is a straight needle type operating tube or a connector type operating tube, which is inserted into the connection structural member along the second through hole, and which is sealingly connected to an O-ring inside the first through hole through the second through hole; the operation tube with the connector is matched and connected with the joint part of the connecting structural member through the connector.
CN202022375460.6U 2020-10-22 2020-10-22 Operating handle for micromanipulation tube and micromanipulation device Active CN214300077U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022375460.6U CN214300077U (en) 2020-10-22 2020-10-22 Operating handle for micromanipulation tube and micromanipulation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022375460.6U CN214300077U (en) 2020-10-22 2020-10-22 Operating handle for micromanipulation tube and micromanipulation device

Publications (1)

Publication Number Publication Date
CN214300077U true CN214300077U (en) 2021-09-28

Family

ID=77840902

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022375460.6U Active CN214300077U (en) 2020-10-22 2020-10-22 Operating handle for micromanipulation tube and micromanipulation device

Country Status (1)

Country Link
CN (1) CN214300077U (en)

Similar Documents

Publication Publication Date Title
CN102026730B (en) A spraying device apparatus
US7939031B2 (en) Automated pipette machine
US9788816B2 (en) Fluid withdrawing, expelling and filtering apparatus
US9067020B2 (en) Needleless injector wand assembly
CA2504424A1 (en) Gas bottle for welding-type devices
CN214300077U (en) Operating handle for micromanipulation tube and micromanipulation device
CN112322447A (en) Operating handle for micromanipulation tube, device and using method thereof
CN101361464A (en) Peal culture nuclear insertion method and device
US20140315282A1 (en) Microinjector mounting module and needle-holder component
CN106289873B (en) For the sampler and its application method to the fluid sampling in container
CN209890612U (en) Full-automatic autologous adipose tissue conversion device
CN208696453U (en) A kind of quick change construction of multifunctional saw
US9822337B2 (en) Device for performing micro-operations on a vesicular object
CN110023631B (en) Compounding valve directly mounted to a port of a fluid pressure device
CN209020710U (en) A kind of hand-held temperature control glue rifle
CN208246731U (en) A kind of Pneumatic perforating rifle
CN208125434U (en) A kind of sugarcane juicer
CN110421199A (en) Valve body end face driller's mold
CN216642923U (en) Nanometer preparation extrusion buffer
CN209237455U (en) A kind of cell filtration system of cell filtration component and its composition
CN219259979U (en) Microinjection device
CN217496101U (en) Air chamber pressurizing assembly with improved structure
CN214366268U (en) Auxiliary oil suction device for engine oil pan
CN211436243U (en) Interface section thickened type liquid-transfering gun head
CN219472732U (en) Biopsy needle air valve with filtering

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant