CN208973928U - A kind of rotating cutting type biopsy needle - Google Patents
A kind of rotating cutting type biopsy needle Download PDFInfo
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- CN208973928U CN208973928U CN201821125509.9U CN201821125509U CN208973928U CN 208973928 U CN208973928 U CN 208973928U CN 201821125509 U CN201821125509 U CN 201821125509U CN 208973928 U CN208973928 U CN 208973928U
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- needle
- outer casing
- syringe
- interior
- positioning
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Abstract
The utility model discloses a kind of rotating cutting type biopsy needles, including syringe, outer casing needle and interior needle, the rear end of the interior needle is equipped with connector, the connector is equipped with the first connecting column and the second connecting column, the front end of the syringe is equipped with groove, the side wall of the groove is equipped with internal screw thread, first connecting column is equipped with external screw thread and positioning groove, the interior needle is mounted on syringe, the rear end of the outer casing needle is equipped with rotary sleeve, the interior of the rotary sleeve is equipped with link slot, the outer casing needle is sleeved on outside interior needle, the outer casing needle is equipped with limiting device, the interior needle, which is equipped with, draws notch, the absorption notch is equipped with barb, the outer casing needle is equipped with knife-edge notch, the syringe needle of the interior needle is solid cusped edge structure, when use, it is protruding that the syringe needle of the interior needle passes through outer casing needle.The utility model structure is simple, easy to operate, at low cost, it is possible to reduce the wound caused by patient, practical, the progress for keeping clinical acquirement bigger is suitble to promote the use of.
Description
Technical field
The utility model relates to biopsy device technical fields, and in particular to a kind of rotating cutting type biopsy needle.
Background technique
In medical diagnosis practice, it is often necessary to execute biopsy (biopsy) to remove the tissue or fluid-like of patient
This is used for pathological study.For example, biopsy can be effective for its of the various forms of cancers of diagnosis and influence local tissue area
Its disease.Biopsy can be used for obtaining tissue and/or fluid sample from muscle, bone and organ such as liver or lung.At present
Biopsy sample is obtained by invasive surgery process mostly, biggish wound easily is caused to patient, is unfavorable for promoting the use of.
Utility model content
In view of the above-mentioned defects in the prior art, the utility model provides a kind of rotating cutting type biopsy needle, and structure is simple, operation side
Just, at low cost, it is possible to reduce the wound caused by patient, practical, the progress for keeping clinical acquirement bigger, suitable popularization makes
With.
To achieve the above object, the technical scheme adopted by the utility model is
A kind of rotating cutting type biopsy needle, including syringe, outer casing needle and interior needle, the rear end of the interior needle is equipped with connector, described
One end of connector is equipped with the first connecting column for connecting with syringe, and the front end of the syringe is equipped with groove, the groove
Side wall is equipped with internal screw thread, and the middle part of the groove is equipped with positioning column, and first connecting column is equipped with external screw thread, and described first
The middle part of connecting column is equipped with positioning groove corresponding with positioning column, and the interior needle is detachable by internal screw thread and externally threaded cooperation
Be mounted on syringe, the other end of the connector is equipped with the second connecting column for connecting outer casing needle, the outer casing needle
Rear end is equipped with rotary sleeve, and the interior of the rotary sleeve is equipped with link slot corresponding with second connecting column, and the outer casing needle passes through
The cooperation of link slot and the second connecting column is rotatably sleeved on outside interior needle, and the outer casing needle is equipped with for limiting insertion depth
Limiting device, the side of the interior needle front end, which is equipped with, draws notch, and the notch of drawing is equipped with barb convenient for cutting, described
Outer casing needle is equipped with knife-edge notch corresponding with notch is drawn, and the syringe needle of the interior needle is solid cusped edge structure, and described draw lacks
The rear end of syringe needle is arranged in mouth, in use, the syringe needle of the interior needle is protruding across outer casing needle.
In above description, preferably, the two sides of second connecting column are equipped with locating convex block, the rotary sleeve is equipped with
Locating slot corresponding with locating convex block, the locating convex block are equipped with the inclined-plane that locating convex block is detached from convenient for locating slot.
In above description, preferably, the limiting device includes positioning sleeve and positioning pin, the outer wall of the positioning sleeve is set
The location hole of useful positioning pin insertion, the positioning sleeve is interior to be equipped with the channel passed through for outer casing needle.
In above description, preferably, the positioning hole is equipped with internal screw thread, the positioning pin is equipped with and internal screw thread pair
The external screw thread answered connects in use, positioning pin screws in contradict in location hole with outer casing needle, and described outside one end of positioning pin is equipped with hand
Handle.
In above description, preferably, being equipped with rear cover, push rod and rubber plug, one end of the push rod and glue in the syringe
Plug connection, being equipped between the other end and rear cover of the push rod, which makes rubber plug always, has the reset bullet against syringe front end trend
Spring.
In above description, preferably, the rear cover is equipped with spring positioning slot, one end of the reset spring is against spring
In locating slot, the other end is against on push rod.
In above description, preferably, the two sides of the syringe are equipped with guide groove, the two sides of the push rod, which are equipped with, to be convenient for
The ring-shaped handle for pushing push rod mobile, the ring-shaped handle are protruding by guide groove.
In above description, preferably, being additionally provided with the scale of mark depth and length on the outer casing needle.
In above description, preferably, the outer casing needle is externally provided with protective case.
Beneficial effect caused by the utility model is: the front end of syringe is equipped with internal screw thread, and the first connecting column is equipped with outer
Screw thread, interior needle is detachably arranged on syringe by the cooperation of internal and external threads, convenient for disassembly and assembly, is tightly combined, and internal needle is convenient for
It is replaced；Outer casing needle is equipped with can be along the movable limiting device of outer casing needle, while outer casing needle is additionally provided with scale, can be accurate
The length that biopsy needle enters patient's body is limited, cell tissue is more precisely asked for, reduces the unnecessary wound of patient；Interior needle front end
Side be equipped with and draw notch, outer casing needle is equipped with and draws the corresponding knife-edge notch of notch, draws notch and knife-edge notch is mutual
Cooperation sampling, and using the absorption tightening force of syringe, rotary-cut dynamics can be effectively improved, it is practical；It draws notch and is equipped with and be convenient for
The barb of cutting, barb hook up tissue samples, and rotating jacket needle cuts the tissue samples hooked up by knife-edge notch, can
More easily to acquire tissue samples, extraction efficiency is improved, uses simple, easy to operate, the progress for keeping clinical acquirement bigger.
For structure feature, technological means and its specific purposes achieved and function for more clearly illustrating the utility model
Can, the utility model is described in further detail with specific embodiment with reference to the accompanying drawing:
Detailed description of the invention
Fig. 1: for the assembly structure diagram of the embodiment of the utility model；
Fig. 2: for the decomposition texture schematic diagram of the embodiment of the utility model；
Fig. 3: for the limiting device decomposition texture schematic diagram of the embodiment of the utility model；
Fig. 4: for part A enlarged drawing in Fig. 2 of the embodiment of the utility model；
Description of drawing identification: 10- syringe, 11- rear cover, 12- push rod, 13- rubber plug, 14- spring positioning slot, 15- reset bullet
Spring, 16- guide groove, 17- ring-shaped handle, 20- outer casing needle, 201- scale, 21- rotary sleeve, 22- locating slot, 23- limiting device,
24- positioning sleeve, 25- positioning pin, 26- location hole, the channel 27-, 28- knife-edge notch, 29- handle, needle in 30-, 31- connector,
The first connecting column of 32-, the second connecting column of 33-, 34- locating convex block, 35- draw notch.
Specific embodiment
As shown in Figs 1-4, a kind of rotating cutting type biopsy needle, including syringe 10, outer casing needle 20 and interior needle 30, in the syringe 10
Equipped with rear cover 11, push rod 12 and rubber plug 13, one end of the push rod 12 is connect with rubber plug 13, and the rear cover 11 is equipped with spring positioning
One end of slot 14, the reset spring 15 is against in spring positioning slot 14, and the other end is against on push rod 12, has rubber plug 13 always
Have the tendency that, against 10 front end of syringe, the two sides of the syringe 10 are equipped with guide groove 16, and the two sides of the push rod 12 are equipped with just
In the ring-shaped handle 17 for pushing push rod 12 mobile, the ring-shaped handle 17 is protruding by guide groove 16, the interior needle 30
Rear end is equipped with connector 31, and one end of the connector 31 is equipped with the first connecting column 32 for connecting with syringe 10, the needle
The front end of cylinder 10 is equipped with groove, and the side wall of the groove is equipped with internal screw thread, and the middle part of the groove is equipped with positioning column, and described the
One connecting column 32 is equipped with external screw thread, and the middle part of first connecting column 32 is equipped with positioning groove corresponding with positioning column, described
Interior needle 30 is detachably arranged on syringe 10 by internal screw thread and externally threaded cooperation, and the other end of the connector 31 is equipped with
For connecting the second connecting column 33 of outer casing needle 20, the rear end of the outer casing needle 20 is equipped with rotary sleeve 21, the rotary sleeve 21
Interior to be equipped with link slot corresponding with second connecting column 33, the outer casing needle 20 is matched by link slot and the second connecting column 33
Conjunction is rotatably sleeved on outside interior needle 30, and the two sides of second connecting column 33 are equipped with locating convex block 34, on the rotary sleeve 21
Equipped with locating slot 22 corresponding with locating convex block 34, the locating convex block 34, which is equipped with, is detached from locating convex block 34 convenient for locating slot 22
Inclined-plane, the outer casing needle 20 is equipped with limiting device 23 for limiting insertion depth, and the limiting device 23 includes positioning
Set 24 and positioning pin 25, the outer wall of the positioning sleeve 24 are equipped with the location hole 26 being inserted into positioning pin 25, in the positioning sleeve 24
Equipped with the channel 27 passed through for outer casing needle 20, internal screw thread is equipped in the location hole 26, the positioning pin 25 is equipped with and interior spiral shell
The corresponding external screw thread of line, in use, positioning pin 25 screw in location hole 26 in outer casing needle 20 contradict connect, the positioning pin 25 to
Outer one end is equipped with for positioning pin 25 to be screwed in the handle 29 in location hole 26, and the side of interior 30 front end of needle is equipped with to draw and lack
Mouth 35, the notch 35 of drawing are equipped with the barb for being convenient for cutting, and the outer casing needle 20 is equipped with knife-edge corresponding with notch 35 is drawn
Notch 28, the syringe needle of the interior needle 30 are solid cusped edge structure, the rear end drawn notch 35 and syringe needle is arranged in, described outer
The front end of trocar 20 is equipped with notch corresponding with syringe needle, and the scale 201 of mark depth and length is additionally provided on the outer casing needle 20,
The outer casing needle 20 is externally provided with protective case.
The working principle of the utility model, in use, first needing the position of biopsy to patient with medical scanning equipments such as B ultrasound
It is positioned, the depth that biopsy needle needs to be inserted into is calculated, according to 201 value of scale on outer casing needle 20, regulation limiting device 23
Depth is limited, it is inserted into the patient after rotating jacket needle 20 will draw the closing of notch 35, then rotated by rotary sleeve 21
Outer casing needle 20 will be drawn notch 35 and be exposed, and the push rod 12 in syringe 10 pulls back, and draws notch 35 and adsorbs tissue samples,
21 rotating jacket needle 20 of rotary sleeve, is cut tissue samples by knife-edge notch 28, and is drawn in syringe 10 by interior needle 30.
The above descriptions are merely preferred embodiments of the present invention for setting, is not intended to limit the utility model, therefore
The practical any modification, equivalent substitution, improvement and etc. to the above embodiments of all technologies according to the utility model, still belong to
In the range of technical solutions of the utility model.
Claims (9)
1. a kind of rotating cutting type biopsy needle, it is characterised in that: including syringe, outer casing needle and interior needle, the rear end of the interior needle, which is equipped with, to be connected
Fitting, one end of the connector are equipped with the first connecting column for connecting with syringe, and the front end of the syringe is equipped with groove, institute
The side wall for stating groove is equipped with internal screw thread, and the middle part of the groove is equipped with positioning column, and first connecting column is equipped with external screw thread,
The middle part of first connecting column is equipped with positioning groove corresponding with positioning column, and the interior needle is by internal screw thread and externally threaded matches
Conjunction is detachably arranged on syringe, and the other end of the connector is equipped with the second connecting column for connecting outer casing needle, described
The rear end of outer casing needle is equipped with rotary sleeve, and the interior of the rotary sleeve is equipped with link slot corresponding with second connecting column, described outer
Trocar is rotatably sleeved on outside interior needle by the cooperation of link slot and the second connecting column, and the outer casing needle is equipped with for limiting
The limiting device of insertion depth, the side of the interior needle front end, which is equipped with, draws notch, and the front end for drawing notch, which is equipped with, to be convenient for
The barb of cutting, the outer casing needle are equipped with knife-edge notch corresponding with notch is drawn, and the syringe needle of the interior needle is solid cusped edge
Structure, the rear end drawn notch and syringe needle is set, in use, the syringe needle of the interior needle is protruding across outer casing needle.
2. a kind of rotating cutting type biopsy needle according to claim 1, it is characterised in that: the two sides of second connecting column are equipped with
Locating convex block, the rotary sleeve are equipped with locating slot corresponding with locating convex block, and the locating convex block, which is equipped with, is convenient for locating slot
It is detached from the inclined-plane of locating convex block.
3. a kind of rotating cutting type biopsy needle according to claim 1, it is characterised in that: the limiting device include positioning sleeve and
Positioning pin, the outer wall of the positioning sleeve are equipped with the location hole being inserted into positioning pin, are equipped in the positioning sleeve and pass through for outer casing needle
Channel.
4. a kind of rotating cutting type biopsy needle according to claim 3, it is characterised in that: the positioning hole is equipped with internal screw thread,
The positioning pin is equipped with external screw thread corresponding with internal screw thread, connects in use, positioning pin screws in contradict in location hole with outer casing needle
It connects, described outside one end of positioning pin is equipped with handle.
5. a kind of rotating cutting type biopsy needle according to claim 1, it is characterised in that: be equipped with rear cover, push rod in the syringe
And rubber plug, one end of the push rod are connect with rubber plug, being equipped between the other end and rear cover of the push rod has rubber plug always
Against the reset spring of syringe front end trend.
6. a kind of rotating cutting type biopsy needle according to claim 5, it is characterised in that: the rear cover is equipped with spring positioning slot,
One end of the reset spring is against in spring positioning slot, and the other end is against on push rod.
7. a kind of rotating cutting type biopsy needle according to claim 5, it is characterised in that: the two sides of the syringe are equipped with guiding
Slot, the ring-shaped handle that the two sides of the push rod are equipped with convenient for pushing push rod mobile, the ring-shaped handle are outside by guide groove
It stretches out.
8. a kind of rotating cutting type biopsy needle according to claim 1, it is characterised in that: it is deep to be additionally provided with mark on the outer casing needle
The scale of degree and length.
9. a kind of rotating cutting type biopsy needle according to claim 1, it is characterised in that: the outer casing needle is externally provided with protective case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821125509.9U CN208973928U (en) | 2018-07-16 | 2018-07-16 | A kind of rotating cutting type biopsy needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821125509.9U CN208973928U (en) | 2018-07-16 | 2018-07-16 | A kind of rotating cutting type biopsy needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208973928U true CN208973928U (en) | 2019-06-14 |
Family
ID=66779952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821125509.9U Active CN208973928U (en) | 2018-07-16 | 2018-07-16 | A kind of rotating cutting type biopsy needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208973928U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108577902A (en) * | 2018-07-16 | 2018-09-28 | 黄月亮 | A kind of rotating cutting type biopsy needle |
| CN114587437A (en) * | 2022-03-29 | 2022-06-07 | 浙江嘉佑医疗器械有限公司 | Buried side edge, rotary cutting type biopsy needle and using method thereof |
-
2018
- 2018-07-16 CN CN201821125509.9U patent/CN208973928U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108577902A (en) * | 2018-07-16 | 2018-09-28 | 黄月亮 | A kind of rotating cutting type biopsy needle |
| CN114587437A (en) * | 2022-03-29 | 2022-06-07 | 浙江嘉佑医疗器械有限公司 | Buried side edge, rotary cutting type biopsy needle and using method thereof |
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