CN219803741U - Push-pull biopsy needle - Google Patents
Push-pull biopsy needle Download PDFInfo
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- CN219803741U CN219803741U CN202222527987.5U CN202222527987U CN219803741U CN 219803741 U CN219803741 U CN 219803741U CN 202222527987 U CN202222527987 U CN 202222527987U CN 219803741 U CN219803741 U CN 219803741U
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- claw
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- 238000001574 biopsy Methods 0.000 title claims abstract description 13
- 210000000078 claw Anatomy 0.000 claims description 83
- 210000000988 bone and bone Anatomy 0.000 description 6
- 210000001185 bone marrow Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009583 bone marrow aspiration Methods 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
Abstract
The utility model belongs to the technical field of medical clinical examination devices, and particularly relates to a push-pull biopsy needle; the device comprises an inner needle seat, an outer needle seat, a depth positioner, a fixed clamp, a movable clamp, an outer needle tube and an inner needle rod, wherein the inner needle rod is fixed at the bottom of the inner needle seat, the outer needle tube is fixed at the bottom of the outer needle seat, the inner needle rod penetrates into the outer needle tube from the top end of the outer needle seat, the inner needle seat is connected to the top of the outer needle seat in a matched manner, the depth positioner is sleeved outside the outer needle seat, the front end of the depth positioner is provided with an opening, the fixed clamp penetrates through and is matched with the depth positioner, and the movable clamp is matched with the fixed clamp; the puncture length is adjusted in a linear push-pull mode, and the puncture depth gauge is arranged, so that the puncture depth is more accurate, the puncture length can be operated by one hand, and the operation of adjusting the puncture length is simple and clear.
Description
Technical Field
The utility model belongs to the technical field of medical clinical examination devices, and particularly relates to a push-pull biopsy needle.
Background
At present, the disposable biopsy needle (suction type) used in the market adopts a threaded connection mode to adjust the application range, has complex operation and low clinical work efficiency, and often causes the condition of sliding tooth failure, thereby bringing a plurality of inconveniences to clinicians and patients.
Disclosure of Invention
In order to overcome the problems, the utility model provides the push-pull biopsy needle, which adopts a linear push-pull mode to adjust the puncture length and is provided with the depth scale, so that the puncture depth is more accurate, the needle can be operated by one hand, the operation of adjusting the length is simple and clear, the used depth positioner is also provided with a locking device, the needle can be easily pushed by one hand, the needle can be locked, the needle is safe and reliable, the displacement of the depth positioner in the process of applying force by puncture can be avoided, the puncture depth is ensured to be correct, and the assembly of the inner needle tube and the outer needle tube always keeps the correct angle.
The push-pull biopsy needle comprises an inner needle seat 1, an outer needle seat 2, a depth positioner 3, a fixed clamp 4, a movable clamp 5, an outer needle tube 6 and an inner needle rod 7, wherein the inner needle rod 7 is fixed at the bottom of the inner needle seat 1, the outer needle tube 6 is fixed at the bottom of the outer needle seat 2, the inner needle rod 7 penetrates into the outer needle tube 6 from the top end of the outer needle seat 2, the inner needle seat 1 is connected at the top of the outer needle seat 2 in a matched manner, the depth positioner 3 is sleeved outside the outer needle seat 2, the front end of the depth positioner 3 is provided with an opening, the depth positioners 3 at the two ends of the opening are respectively provided with a plurality of depth positioning clamping grooves 31, and the depth positioners 3 at the rear end of each side of the depth positioning clamping grooves 31 are respectively provided with a baffle plate;
the fixing clip 4 comprises a fixing clip body 45, a fixing clip connecting plate 46, a fixing clip connecting rod 47 and an outer needle seat connecting claw 42, wherein the outer needle seat connecting claw 42 is arranged above the rear end of the fixing clip body 45, the fixing clip connecting plate 46 is fixed at the rear end of the fixing clip body 45 below the outer needle seat connecting claw 42, movable clip connecting slots 43 are respectively arranged in the left side and the right side of the fixing clip connecting plate 46, a fixing clip connecting rod 47 is respectively fixed at the left side and the right side of the rear end of the fixing clip connecting plate 46, a depth positioning claw 41 is arranged at the front end of the outer side of the bottom of the fixing clip connecting rod 47, a depth positioner connecting claw 44 is arranged at the rear end of the bottom of the fixing clip connecting rod 47, and a first groove is formed between the depth positioning claw 41 and the depth positioner connecting claw 44;
the movable card 5 comprises a movable card body 53, wherein the left and right ends of the top of the movable card body 53 are respectively provided with a fixed card connecting claw 51, and the rear end of the movable card body 53 below the fixed card connecting claw 51 is provided with a fixed claw 52;
the outer needle seat connecting claw 42 on the fixed clamp 4 passes through the depth positioner 3 and then is clamped in the fixed clamp connecting groove 24 arranged on the outer wall below the outer needle seat 2, meanwhile, the depth positioning claw 41 is matched and connected in the corresponding depth positioning clamping groove 31, and the baffle is matched and connected in a first groove formed between the depth positioning claw 41 and the depth positioner connecting claw 44;
the fixed-card connecting claw 51 is clamped in the corresponding movable-card connecting clamping groove 43, the fixed claw 52 is positioned between the fixed-card connecting claws 44, when the movable-card body 53 is pushed upwards, the fixed-card connecting claw 51 slides out of the movable-card connecting clamping groove 43 and moves upwards, so that the fixed-card connecting claw 51 is matched in a gap outside the fixed-card connecting plate 46 between the fixed-card body 45 and the fixed-card connecting rod 47 until the fixed claw 52 is matched and connected between the fixed-card connecting rods 47 above the fixed-card connecting claw 44, and the top of the fixed-card body 53 is contacted with the bottom of the fixed-card body 45.
The inner needle seat 1 comprises a needle seat cap, wherein an inner needle rod 7 is fixed at the bottom of the needle seat cap, a rotary fixing clamping point 11 is arranged on the edge of the bottom of the needle seat cap, and a longitudinal fixing small clamping point 12 and a longitudinal fixing large clamping point 13 are oppositely arranged on the inner wall of the needle seat cap.
The outer needle seat 2 comprises a T-shaped tray and an upright column, wherein the T-shaped tray is arranged above the upright column, a locking luer joint 21 is arranged at the top of the T-shaped tray, a rotary fixing clamping groove 25 is formed in the edge of the bottom of the T-shaped tray, a longitudinal fixing small slideway 22 and a longitudinal fixing large slideway 23 are relatively arranged on the inner wall of the top of the T-shaped tray, a fixing connecting groove 24 is formed in the upright column, a rotary fixing clamping point 11 is connected in the rotary fixing clamping groove 25 in a matched mode, and a longitudinal fixing small clamping point 12 and a longitudinal fixing large clamping point 13 are connected in the longitudinal fixing small slideway 22 and the longitudinal fixing large slideway 23 in a matched mode respectively.
The utility model has the beneficial effects that:
1. the utility model designs the handle which accords with human engineering, has comfortable hand feeling, is convenient for clinical operation and medical staff to exert force, and saves force.
2. The utility model cancels the screw connection adjusting mode of the prior depth positioner, adopts the positioning mode of the clamping point and the clamping groove, and realizes the puncture depth adjustment through linear push-pull; the failure modes such as sliding teeth and the like are avoided during threaded connection, and the accuracy of the puncture depth is improved.
3. The inner needle and the outer needle of the utility model are firmly and reliably connected, and the stability in clinical use is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings to be used in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic view of the usage state of the present utility model.
Fig. 3 is a schematic view of the structure of the inner hub portion of the present utility model.
Fig. 4 is a schematic bottom view of the inner hub portion of the present utility model.
Fig. 5 is a schematic view of the structure of the outer hub of the present utility model.
Fig. 6 is a schematic top view of the outer hub of the present utility model.
FIG. 7 is a schematic view of a depth positioner according to the present utility model.
FIG. 8 is a schematic view of a depth positioner and a locking mechanism according to the present utility model.
Fig. 9 is a schematic view of a card fixing structure according to the present utility model.
Fig. 10 is a schematic side view of the fixed card of the present utility model.
Fig. 11 is a schematic view of a moving card structure according to the present utility model.
Fig. 12 is a schematic side view of the moving card of the present utility model.
Fig. 13 is a schematic side view of the locking state of the fixed and movable cards of the present utility model.
Fig. 14 is a schematic view showing locking states of the fixed card and the movable card according to the present utility model.
Fig. 15 is a schematic side view of the utility model in the locked and unlocked state.
Fig. 16 is a schematic view of the unlocking state of the fixed card and the movable card of the present utility model.
Wherein: the inner needle seat 1, the rotary fixing clip point 11, the longitudinal fixing small clip point 12, the longitudinal fixing large clip point 13, the outer needle seat 2, the locking luer joint 21, the longitudinal fixing small slide 22, the longitudinal fixing large slide 23, the fixing clip connecting groove 24, the rotary fixing clip groove 25, the depth positioner 3, the depth positioning clip groove 31, the fixing clip 4, the depth positioning clip claw 41, the outer needle seat connecting claw 42, the moving clip connecting clip groove 43, the depth positioner connecting claw 44, the fixing clip body 45, the fixing clip connecting plate 46, the fixing clip connecting rod 47, the moving clip 5, the fixing clip connecting claw 51, the fixing claw 52, the moving clip body 53, the outer needle tube 6 and the inner needle rod 7.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Also, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or merely the first characteristic the level is higher than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
Example 1
As shown in fig. 1-12, a push-pull biopsy needle comprises an inner needle seat 1, an outer needle seat 2, a depth positioner 3, a fixed clamp 4, a movable clamp 5, an outer needle tube 6 and an inner needle rod 7, wherein the inner needle rod 7 is fixed at the bottom of the inner needle seat 1, the outer needle tube 6 is fixed at the bottom of the outer needle seat 2 (one part of the outer needle tube 6 is injection molded in the outer needle seat 2, the other part of the outer needle tube 6 extends out of the lower end of the outer needle seat 2), the inner needle rod 7 penetrates into the outer needle tube 6 from the top end of the outer needle seat 2, the inner needle seat 1 is connected to the top of the outer needle seat 2 in a matched manner, the depth positioner 3 is sleeved outside the outer needle seat 2, the front end of the depth positioner 3 is provided with an opening, the depth positioners 3 at two ends of the opening are respectively provided with a plurality of depth positioning clamping grooves 31, and the depth positioners 3 at the rear end of each side of the depth positioning clamping grooves 31 are respectively provided with a baffle plate;
the fixing clip 4 comprises a fixing clip body 45, a fixing clip connecting plate 46, a fixing clip connecting rod 47 and an outer needle seat connecting claw 42, wherein the outer needle seat connecting claw 42 is arranged above the rear end of the fixing clip body 45, the fixing clip connecting plate 46 is fixed at the rear end of the fixing clip body 45 below the outer needle seat connecting claw 42, movable clip connecting slots 43 are respectively arranged in the left side and the right side of the fixing clip connecting plate 46, a fixing clip connecting rod 47 is respectively fixed at the left side and the right side of the rear end of the fixing clip connecting plate 46, a depth positioning claw 41 is arranged at the front end of the outer side of the bottom of the fixing clip connecting rod 47, a depth positioner connecting claw 44 is arranged at the rear end of the bottom of the fixing clip connecting rod 47, and a first groove is formed between the depth positioning claw 41 and the depth positioner connecting claw 44;
the movable card 5 comprises a movable card body 53, wherein the left and right ends of the top of the movable card body 53 are respectively provided with a fixed card connecting claw 51, and the rear end of the movable card body 53 below the fixed card connecting claw 51 is provided with a fixed claw 52;
wherein the outer needle seat connecting claw 42 on the fixed clamp 4 passes through the opening at the front end of the depth positioner 3 and then is clamped in the fixed clamp connecting groove 24 arranged on the outer wall below the outer needle seat 2, the fixed clamp 4 is fixed on the outer needle seat 2, meanwhile, the depth positioning claw 41 is matched and connected in the corresponding depth positioning clamping groove 31, the baffle is matched and connected in the first groove formed between the depth positioning claw 41 and the depth positioner connecting claw 44,
the fixed clamping connection claws 51 are clamped in the corresponding movable clamping connection clamping grooves 43, the fixed claws 52 are positioned between the depth positioner connection claws 44, and the depth positioning claws 41 cannot bend inwards at the moment, so that the depth positioning claws 41 are prevented from sliding in the depth positioning clamping grooves 31; when the movable card body 53 is pushed upwards, the fixed card connecting claw 51 slides out from the movable card connecting clamping groove 43 and moves upwards, so that the fixed card connecting claw 51 is matched in a gap outside the fixed card connecting plate 46 between the fixed card body 45 and the fixed card connecting rod 47 until the fixed claw 52 is matched and connected between the fixed card connecting rods 47 above the depth positioner connecting claw 44, and the movable card body 53 is not contacted with the bottom of the fixed card body 45 when the fixed card connecting claw 41 is interfered to open or close.
When the fixed claw 52 is positioned between the fixed clamp connecting rods 47, the two depth positioner connecting claws 44 can swing towards the middle, and the fixed clamp connecting claw 51 is positioned at the upper end of the fixed clamp connecting plate 46, namely in a gap between the fixed clamp body 45 and the fixed clamp connecting rods 47, and the depth positioning claws 41 can move up and down in different depth positioning clamping grooves 31; when the fixing claws 52 are located between the depth positioner connecting claws 44, the two depth positioner connecting claws 44 cannot swing toward the middle, so that the depth positioner claw 41 cannot move in the different depth positioner clamping grooves 31.
The outer needle tube 6 is injection molded in the outer needle seat 2, the outer needle tube 6 and the outer needle seat 2 are always fixed and do not displace, the position of the locating card 4 on the depth locator 3 can be pulled up and down, and then the relative position of the outer needle seat 2 and the depth locator 3 is changed, and the distance between the needle tip of the outer needle tube 6 and the depth locator 3 is changed, so that the purpose of adjusting the puncture depth is achieved.
The inner needle seat 1 comprises a needle seat cap, wherein an inner needle rod 7 is fixed at the bottom of the needle seat cap, a rotary fixing clamping point 11 is arranged on the edge of the bottom of the needle seat cap, and a longitudinal fixing small clamping point 12 and a longitudinal fixing large clamping point 13 are oppositely arranged on the inner wall of the needle seat cap.
The outer needle seat 2 comprises a T-shaped tray and an upright column, wherein the T-shaped tray is arranged above the upright column, a locking luer joint 21 matched with a syringe with a luer joint is arranged at the top of the T-shaped tray, a rotary fixing clamping groove 25 is formed in the bottom edge of the T-shaped tray, a longitudinal fixing small slide 22 and a longitudinal fixing large slide 23 are relatively arranged on the inner wall of the top of the T-shaped tray, a fixing clamping connecting groove 24 is formed in the upright column, the rotary fixing clamping point 11 is matched and connected in the rotary fixing clamping groove 25, and the longitudinal fixing small clamping point 12 and the longitudinal fixing large clamping point 13 are respectively matched and connected in the longitudinal fixing small slide 22 and the longitudinal fixing large slide 23.
When the inner needle bar 7 is to be pulled out, the inner needle bar 1 is required to be pulled out by twisting the inner needle bar 1, so that the longitudinal fixed small clamping point 12 and the longitudinal fixed large clamping point 13 respectively slide upwards in the longitudinal fixed small slideway 22 and the longitudinal fixed large slideway 23 in a rotating way, and when the sliding way outlet is reached, the inner needle bar 1 can be pulled out, thereby the outer needle tube 6 forms a channel, and further the bone marrow aspiration action is completed.
An outer needle tube 6 with a cutting edge, and an inner needle rod 7 for preventing human tissue from blocking the outer needle tube 6 during puncturing, and a depth positioner 3 for adjusting the puncturing depth.
Embodiments are described below:
as shown in fig. 15 and 16, the product initial state: the inner needle seat 1 and the inner needle rod 7 are connected by injection molding, and the outer needle seat 2 and the outer needle rod 6 are connected by injection molding. The inner needle seat 1 and the outer needle seat 2 are relatively fixed, the outer needle seat 2 and the fixed clamp 4 are relatively fixed, the rotary fixed clamp point 11 is arranged in the rotary fixed clamp groove 25, the longitudinal fixed small clamp point 12 is arranged in the longitudinal fixed small slide way 22, and the longitudinal fixed large clamp point 13 is arranged in the longitudinal fixed large slide way 23. The inner needle bar 7 does not protrude from the outer needle tube 6. Both the movable card 5 and the fixed card 4 are closed.
As shown in fig. 13 and 14, the product use process: when the clinical operation medical staff does not need to carry out puncture depth adjustment on the examination needle, the movable clamp 5 can be directly pulled down, when the fixed clamp connection clamping point 51 enters the movable clamp connection clamping groove 43, clear hand feeling is provided for the operator, the fixed claw 52 is positioned between the depth positioning clamping claws 44 at the moment, the depth positioning clamping claws 41 can not move in different depth positioning clamping grooves 31 any more, the depth positioning claws 3 are locked at the moment, the needle bone cavity can be penetrated until the bone cortex is broken, namely the outer needle tube 6 and the inner needle rod 7 are pricked into the bone cavity, the inner needle seat 1 is rotated, the inner needle rod 7 is pulled out, the injector is connected to the locking luer joint 21, repeated aspiration of bone marrow fluid is carried out until the total amount of bone marrow fluid needed by the examination is reached, then the inner needle rod 7 is put into the outer needle tube 6 again without screwing again, and the biopsy needle is pulled out integrally, and the biopsy needle is processed properly;
when the clinical operation medical staff needs to carry out puncture depth adjustment on the examination needle, the depth positioner 3 is held, the fixed clamp 4 is pushed upwards by the thumb, the depth positioning clamp point 41 slides upwards in the depth positioning clamp groove 31 and then slides into other degree positioning clamp grooves 31 with required heights, the inner needle seat 1, the outer needle seat 2, the movable clamp 5, the outer needle tube 6 and the inner needle rod 7 are driven to integrally upwards, the adjustment of puncture depth is realized, the adjusted size is shown as a numerical value mark on the outer needle seat of the graph, when the required puncture depth is reached, the movable clamp 5 is pulled down, when the fixed clamp connection clamp point 51 enters the movable clamp connection clamp groove 43, the operator is prompted by clear hand feeling, the fixed clamp 52 moves to the middle of the depth positioning clamp point 41, so that the fixed clamp point can not move in the depth positioning clamp groove 31 any more, at the moment, the depth positioner 3 is locked, after the needle bone cavity is advanced to the cortical bone, the inner needle seat 1 is rotated, the needle seat is connected on the locking joint 21 again, repeated aspiration is carried out until the total amount of bone marrow liquid required by examination is reached, then the inner needle rod 7 is replaced into the needle tube 6, and the whole tissue can be treated.
The depth positioner 3 designed for adjusting the depth is quite different from the existing mode in the market, the traditional mode is a threaded connection mode, the operation is complex, the puncture length is adjusted by adopting a linear push-pull mode, the puncture depth is more accurate by a depth scale, the operation of adjusting the length is simple and clear by one hand, the depth positioner 3 is also provided with a locking device, the locking can be realized by easy pushing, the locking is safe and reliable, the displacement of the depth positioner 3 in the process of applying force by puncture can be avoided, and the puncture depth is ensured to be free of errors; the inner needle seat 1 and the outer needle seat 2 are tightly fixed by adopting simple screw type slide way buckles, two rotating slide ways with different opening sizes are arranged in the positive and negative directions on the outer needle seat 2, so that the assembly of the inner needle tube and the outer needle tube can be kept at a correct angle all the time, when the inner needle rod 7 and the outer needle tube 6 enter a human body simultaneously, the inner needle rod 7 cannot be fixed to retreat the needle, after the cortex of bone is broken through, a user can rotate the inner needle seat 1, and the inner needle rod 7 can be easily taken out under the condition that the rotating angle is smaller than 90 degrees.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the scope of the present utility model is not limited to the specific details of the above embodiments, and within the scope of the technical concept of the present utility model, any person skilled in the art may apply equivalent substitutions or alterations to the technical solution according to the present utility model and the inventive concept thereof within the scope of the technical concept of the present utility model, and these simple modifications are all within the scope of the present utility model.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.
Claims (3)
1. The push-pull biopsy needle is characterized by comprising an inner needle seat (1), an outer needle seat (2), a depth positioner (3), a fixed clamp (4), a movable clamp (5), an outer needle tube (6) and an inner needle rod (7), wherein the inner needle rod (7) is fixed at the bottom of the inner needle seat (1), the outer needle tube (6) is fixed at the bottom of the outer needle seat (2), the inner needle rod (7) penetrates into the outer needle tube (6) from the top end of the outer needle seat (2), the inner needle seat (1) is connected to the top of the outer needle seat (2) in a matched manner, the depth positioner (3) is sleeved outside the outer needle seat (2), an opening is formed in the front end of the depth positioner (3), a plurality of depth positioning clamping grooves (31) are respectively formed in the depth positioners (3) at two ends of the opening, and baffles are respectively arranged at the depth positioner (3) at the rear end of each side of the depth positioning clamping grooves (31);
the fixed clamp (4) comprises a fixed clamp body (45), a fixed clamp connecting plate (46), a fixed clamp connecting rod (47) and an outer needle seat connecting claw (42), wherein the outer needle seat connecting claw (42) is arranged above the rear end of the fixed clamp body (45), the fixed clamp connecting plate (46) is fixed at the rear end of the fixed clamp body (45) below the outer needle seat connecting claw (42), movable clamp connecting slots (43) are respectively arranged in the left side and the right side of the fixed clamp connecting plate (46), the fixed clamp connecting rod (47) is respectively fixed at the left side and the right side of the rear end of the fixed clamp connecting plate (46), a depth positioning claw (41) is arranged at the front end of the outer side of the bottom of the fixed clamp connecting rod (47), a depth positioner connecting claw (44) is arranged at the rear end of the bottom of the fixed clamp connecting rod (47), and a first groove is formed between the depth positioning claw (41) and the depth positioner connecting claw (44);
the movable card (5) comprises a movable card body (53), wherein fixed card connecting claws (51) are respectively arranged at the left end and the right end of the top of the movable card body (53), and fixed claws (52) are arranged at the rear end of the movable card body (53) below the fixed card connecting claws (51);
wherein the outer needle seat connecting claw (42) on the fixed clamp (4) passes through the depth positioner (3) and is clamped in the fixed clamp connecting groove (24) arranged on the outer wall below the outer needle seat (2), simultaneously, the depth positioning clamping claws (41) are connected in the corresponding depth positioning clamping grooves (31) in a matched mode, and the baffle is connected in a first groove formed between the depth positioning clamping claws (41) and the depth positioner connecting clamping claws (44) in a matched mode;
the fixed clamping connection claw (51) is clamped in the corresponding movable clamping connection clamping groove (43), the fixed claw (52) is located between the depth positioner connection clamping claws (44), when the movable clamping body (53) is pushed upwards, the fixed clamping connection claw (51) slides out of the movable clamping connection clamping groove (43) and moves upwards, the fixed clamping connection clamping claw (51) is matched in a gap outside the fixed clamping connection plate (46) between the fixed clamping body (45) and the fixed clamping connection rod (47), until the fixed claw (52) is matched and connected between the fixed clamping connection rods (47) above the depth positioner connection clamping claws (44), and the top of the movable clamping body (53) is contacted with the bottom of the fixed clamping body (45).
2. A push-pull biopsy needle according to claim 1, characterized in that the inner needle holder (1) comprises a needle holder cap, wherein the bottom of the needle holder cap is fixed with an inner needle rod (7), and the bottom edge of the needle holder cap is provided with a rotary fixed clamping point (11), and the inner wall of the needle holder cap is relatively provided with a longitudinal fixed small clamping point (12) and a longitudinal fixed large clamping point (13).
3. A push-pull biopsy needle according to claim 2, wherein the outer needle holder (2) comprises a T-shaped tray and a stand, wherein the T-shaped tray is arranged above the stand, a locking luer joint (21) is arranged at the top of the T-shaped tray, a rotary fixing clamping groove (25) is arranged on the bottom edge of the T-shaped tray, a longitudinal fixing small slideway (22) and a longitudinal fixing large slideway (23) are oppositely arranged on the inner wall of the top of the T-shaped tray, a fixing connecting groove (24) is arranged on the stand, a rotary fixing clamping point (11) is connected in the rotary fixing clamping groove (25) in a matched manner, and a longitudinal fixing small clamping point (12) and a longitudinal fixing large clamping point (13) are connected in the longitudinal fixing small slideway (22) and the longitudinal fixing large slideway (23) in a matched manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222527987.5U CN219803741U (en) | 2022-09-21 | 2022-09-21 | Push-pull biopsy needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222527987.5U CN219803741U (en) | 2022-09-21 | 2022-09-21 | Push-pull biopsy needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219803741U true CN219803741U (en) | 2023-10-10 |
Family
ID=88215445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222527987.5U Active CN219803741U (en) | 2022-09-21 | 2022-09-21 | Push-pull biopsy needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219803741U (en) |
-
2022
- 2022-09-21 CN CN202222527987.5U patent/CN219803741U/en active Active
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