CN219538576U - Animal experiment perfusion needle - Google Patents
Animal experiment perfusion needle Download PDFInfo
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- CN219538576U CN219538576U CN202223390157.9U CN202223390157U CN219538576U CN 219538576 U CN219538576 U CN 219538576U CN 202223390157 U CN202223390157 U CN 202223390157U CN 219538576 U CN219538576 U CN 219538576U
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- clamping plate
- needle
- movable sleeve
- clamping
- perfusion needle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/70—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in livestock or poultry
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Abstract
The utility model provides an animal experiment perfusion needle, which comprises a first clamping plate, a pressing plate, a compression spring, a movable sleeve and a second clamping plate, wherein the movable sleeve is sleeved on the surface of the perfusion needle, rotary joints are arranged on the upper side and the lower side of the movable sleeve, the first clamping plate is arranged on the upper side of the movable sleeve, the second clamping plate is arranged on the lower side of the movable sleeve, the first clamping plate and the second clamping plate are both connected with the rotary joints through rotary joint seats, the pressing plates are arranged at the right ends of the first clamping plate and the second clamping plate, and the pressing plates are connected through the compression spring.
Description
Technical Field
The utility model relates to an animal experiment perfusion needle, and belongs to the technical field of animal experiment perfusion.
Background
In experimental animal histopathological studies, fixation is usually performed prior to animal sacrifice in order to avoid or reduce post-mortem changes in tissue morphology and structure. The fixing method has various methods, namely perfusion fixing is the most common method, namely, perfusion liquid is enabled to be filled in tissues rapidly and uniformly through blood circulation by ventricular perfusion fixing liquid, living cells are fixed in situ uniformly, and the method has important significance for maintaining the integrity of tissue cells.
Chinese patent No.: CN 107049553A, which discloses an animal experiment perfusion needle, comprises a perfusion needle body, wherein a fixing device is arranged on the perfusion needle body, the fixing device comprises two clamps, and the two clamps are respectively connected with a needle stem of the perfusion needle body through a connecting arm. The animal experiment perfusion needle is small in size and light in appearance, the needle head and the heart can be fixed without other equipment by arranging the fixing device on the perfusion needle body, the inconvenience of fixing the perfusion needle in the traditional animal experiment is overcome, and the animal experiment perfusion needle is more convenient to operate.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide the animal experiment perfusion needle so as to solve the problems in the background art, the animal experiment perfusion needle is reasonable in structure, the perfusion needle can be quickly fixed through the cooperation of the two groups of clamping plates and the compression spring, the clamping plates can move to the rear side when the perfusion needle penetrates into animal tissues, the penetration of the perfusion needle cannot be blocked, and meanwhile, the perfusion needle can be limited and fixed through the limiting baffle plate, so that the perfusion needle is further prevented from falling off.
In order to achieve the above object, the present utility model is realized by the following technical scheme: the perfusion needle for the animal experiment comprises a perfusion needle, a clamping and fixing assembly and a connector, wherein the connector is arranged at the right end of the perfusion needle, and the clamping and fixing assembly is arranged on the annular side surface of the perfusion needle;
the clamping fixing assembly comprises a first clamping plate, a pressing plate, a compression spring, a movable sleeve, a second clamping plate, an anti-slip pad, a rotary hinging seat and a rotary hinging head, wherein the movable sleeve is sleeved on the surface of a perfusion needle, the upper side and the lower side of the movable sleeve are respectively provided with the rotary hinging head, the upper side of the movable sleeve is provided with the first clamping plate, the lower side of the movable sleeve is provided with the second clamping plate, the first clamping plate and the second clamping plate are respectively connected with the rotary hinging head through the rotary hinging seat, the right ends of the first clamping plate and the second clamping plate are respectively provided with the pressing plate, the pressing plates are connected through the compression spring, and the anti-slip pad is respectively arranged on the left side of the lower surface of the first clamping plate and the left side of the upper surface of the second clamping plate.
Further, the perfusion needle is provided with a limiting baffle, and the diameter of the limiting baffle is larger than that of the movable sleeve.
Further, two groups of compression springs are arranged, the two groups of compression springs are respectively arranged on the front side and the rear side between the pressing plates, the upper ends of the compression springs are fixedly connected with the pressing plates on the first clamping plates, and the lower ends of the compression springs are fixedly connected with the pressing plates on the second clamping plates.
Further, the locating groove is formed in the anti-slip pad, the locating groove is of an arc-shaped structure, and a plurality of groups of anti-slip protrusions are uniformly arranged on the inner wall of the locating groove.
Further, the limiting baffle is made of plastic, the limiting baffle is fixedly bonded with the filling needle through glue, and the inner diameter of the movable sleeve is the same as the diameter of the filling needle.
By adopting the technical scheme, the utility model has the beneficial effects that: according to the animal experiment perfusion needle, the perfusion needle can be quickly fixed through the matching effect of the two groups of clamping plates and the compression spring, the clamping plates can move to the rear side when the perfusion needle is inserted into animal tissues, the perfusion needle cannot be blocked, and meanwhile, the perfusion needle can be limited and fixed through the limiting baffle plate, so that the perfusion needle is further prevented from falling off, the problem that in the prior art, the two groups of clamping plates and the connecting arm are used for fixing the perfusion needle, the perfusion needle is blocked when the perfusion needle is inserted into animal tissues, the penetration of the perfusion needle is hindered, and the two groups of clamping plates are connected in a meshed mode through the clamping teeth, so that the locking state of the two groups of clamping plates is not easy to release after the perfusion is finished, the operation is not convenient, and the practicability is improved.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a structure of an animal experiment perfusion needle of the present utility model;
FIG. 2 is a schematic diagram of the structure of a second clamping plate in the injection needle for animal experiments;
FIG. 3 is a schematic view of the structure of a movable sleeve in an animal experiment perfusion needle according to the present utility model;
in the figure: 1-perfusion needle, 2-clamping and fixing assembly, 21-first splint, 22-pressing plate, 23-compression spring, 24-movable sleeve, 25-limit baffle, 26-second splint, 27-anti-slip pad, 28-positioning groove, 281-anti-slip bump, 29-rotary hinge seat, 210-rotary hinge head and 3-connector.
Detailed Description
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
Referring to fig. 1-3, the present utility model provides a technical solution: the perfusion needle for the animal experiment comprises a perfusion needle 1, a clamping and fixing assembly 2 and a connector 3, wherein the connector 3 is arranged at the right end of the perfusion needle 1, and the clamping and fixing assembly 2 is arranged on the annular side surface of the perfusion needle 1;
the clamping and fixing assembly 2 comprises a first clamping plate 21, a pressing plate 22, a compression spring 23, a movable sleeve 24, a second clamping plate 26, an anti-slip pad 27, a rotary hinging seat 29 and a rotary hinging head 210, wherein the movable sleeve 24 is sleeved on the surface of the pouring needle 1, the rotary hinging head 210 is arranged on the upper side and the lower side of the movable sleeve 24, the first clamping plate 21 is arranged on the upper side of the movable sleeve 24, the second clamping plate 26 is arranged on the lower side of the movable sleeve 24, the first clamping plate 21 and the second clamping plate 26 are connected with the rotary hinging head 210 through the rotary hinging seat 29, the pressing plates 22 are respectively provided with the pressing plate 22, the anti-slip pad 27 is arranged on the left side of the lower surface of the first clamping plate 21 and the left side of the upper surface of the second clamping plate 26, the design solves the problems that in the prior art, two groups of clamps and the connecting arm fix the pouring needle 1, the pouring needle 1 is blocked when animal tissues are poured, the two groups of clamps are connected in a meshed mode through teeth, the two groups of clamps are not easy to release after the clamping ends, and the locking state of the two groups of clamps is not easy to be convenient to operate.
The spacing separation blade 25 sets up on filling needle 1, and spacing separation blade 25 diameter is greater than movable sleeve 24 diameter, and this design can block movable sleeve 24 through the spacing separation blade 25 that sets up, can cooperate first splint 21 and second splint 26 to carry out spacing fixedly filling needle 1 simultaneously, prevents that filling needle 1 from droing.
The compression springs 23 are provided with two groups, the two groups of compression springs 23 are respectively arranged on the front side and the rear side between the pressing plates 22, the upper ends of the compression springs 23 are fixedly connected with the pressing plates 22 on the first clamping plates 21, the lower ends of the compression springs 23 are fixedly connected with the pressing plates 22 on the second clamping plates 26, and the two groups of compression springs 23 can provide enough reverse elastic force for the first clamping plates 21 and the second clamping plates 26 so that enough clamping force is generated between the first clamping plates 21 and the second clamping plates 26.
The positioning groove 28 is formed in the anti-slip pad 27, the positioning groove 28 is of an arc-shaped structure, a plurality of groups of anti-slip protrusions 281 are uniformly arranged on the inner wall of the positioning groove 28, animal tissues can be clamped and connected through the arranged positioning groove 28 during pouring, and meanwhile anti-slip performance of the anti-slip pad 27 is improved through the arranged anti-slip protrusions 281.
The limiting baffle 25 is made of plastic, the limiting baffle 25 is fixedly bonded with the filling needle 1 through glue, the inner diameter of the movable sleeve 24 is the same as the diameter of the filling needle 1, and the design is convenient for enabling the movable sleeve 24 to move left and right on the filling needle 1.
As an embodiment of the present utility model: when the animal is perfused, the two groups of pressing plates 22 are pressed inwards to open the first clamping plate 21 and the second clamping plate 26 by a certain angle, then the movable sleeve 24 slides to the right side along the perfusion needle 1 by a certain distance, the first clamping plate 21 and the second clamping plate 26 are completely positioned in the right side area of the limit baffle 25, then the left end of the perfusion needle 1 is penetrated into animal tissues, at the moment, the movable sleeve 24 moves to the left side until the movable sleeve 24 is attached to the limit baffle 25, then the first clamping plate 21 and the second clamping plate 26 are clamped on the animal tissues, and enough reverse elastic force can be provided for the first clamping plate 21 and the second clamping plate 26 through the two groups of compression springs 23, so that enough clamping force is generated between the first clamping plate 21 and the second clamping plate 26 to ensure the clamping stability, at the moment, the perfusion needle 1 and the animal tissues can be connected and fixed through the first clamping plate 21 and the second clamping plate 26, and the animal tissues can be effectively prevented from falling off the perfusion needle 1.
While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. The utility model provides an animal experiment fills needle, includes filling needle, centre gripping fixed subassembly and connector, its characterized in that: the right end of the perfusion needle is provided with a connector, and the annular side surface of the perfusion needle is provided with a clamping and fixing assembly;
the clamping fixing assembly comprises a first clamping plate, a pressing plate, a compression spring, a movable sleeve, a second clamping plate, an anti-slip pad, a rotary hinging seat and a rotary hinging head, wherein the movable sleeve is sleeved on the surface of a perfusion needle, the upper side and the lower side of the movable sleeve are respectively provided with the rotary hinging head, the upper side of the movable sleeve is provided with the first clamping plate, the lower side of the movable sleeve is provided with the second clamping plate, the first clamping plate and the second clamping plate are respectively connected with the rotary hinging head through the rotary hinging seat, the right ends of the first clamping plate and the second clamping plate are respectively provided with the pressing plate, the pressing plates are connected through the compression spring, and the anti-slip pad is respectively arranged on the left side of the lower surface of the first clamping plate and the left side of the upper surface of the second clamping plate.
2. An animal experiment perfusion needle as claimed in claim 1, wherein: the perfusion needle is provided with a limiting baffle, and the diameter of the limiting baffle is larger than that of the movable sleeve.
3. An animal experiment perfusion needle as claimed in claim 1, wherein: the compression springs are provided with two groups, the two groups of compression springs are respectively arranged on the front side and the rear side between the pressing plates, the upper ends of the compression springs are fixedly connected with the pressing plates on the first clamping plates, and the lower ends of the compression springs are fixedly connected with the pressing plates on the second clamping plates.
4. An animal experiment perfusion needle as claimed in claim 1, wherein: the anti-slip pad is characterized in that a positioning groove is formed in the anti-slip pad, the positioning groove is of an arc-shaped structure, and a plurality of groups of anti-slip protrusions are uniformly arranged on the inner wall of the positioning groove.
5. An animal experiment perfusion needle as claimed in claim 2, wherein: the limiting baffle is made of plastic, the limiting baffle is fixedly bonded with the filling needle through glue, and the inner diameter of the movable sleeve is the same as the diameter of the filling needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223390157.9U CN219538576U (en) | 2022-12-17 | 2022-12-17 | Animal experiment perfusion needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223390157.9U CN219538576U (en) | 2022-12-17 | 2022-12-17 | Animal experiment perfusion needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219538576U true CN219538576U (en) | 2023-08-18 |
Family
ID=87731164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223390157.9U Active CN219538576U (en) | 2022-12-17 | 2022-12-17 | Animal experiment perfusion needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219538576U (en) |
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2022
- 2022-12-17 CN CN202223390157.9U patent/CN219538576U/en active Active
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