CN203841829U - Liquid nitrogen type femoral head necrosis model freezing meter - Google Patents
Liquid nitrogen type femoral head necrosis model freezing meter Download PDFInfo
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- CN203841829U CN203841829U CN201420169189.2U CN201420169189U CN203841829U CN 203841829 U CN203841829 U CN 203841829U CN 201420169189 U CN201420169189 U CN 201420169189U CN 203841829 U CN203841829 U CN 203841829U
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- liquid nitrogen
- storage chamber
- femoral head
- head necrosis
- type femoral
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Abstract
The utility model discloses a liquid nitrogen type femoral head necrosis model freezing meter. The liquid nitrogen type femoral head necrosis model freezing meter is formed by a freezing probe, a liquid nitrogen conveying pipe, a heat insulation pipe, a pressure valve, a storage chamber cover, a handheld handle, a liquid nitrogen storage chamber and a heat insulation layer; the heat insulation layer is arranged inside the liquid nitrogen storage chamber; the handheld handle is fixed on the external side of the liquid nitrogen storage chamber through a screw; the top of the liquid nitrogen storage chamber is connected with the storage chamber cover; the pressure valve is arranged on the storage chamber cover; the center of the storage chamber cover is provided with a circular opening; the edge of the circular opening is welded to the bottom of the heat insulation pipe; the liquid nitrogen conveying pipe penetrates the center of the circular opening; the liquid nitrogen conveying pipe is arranged inside the heat insulation pipe; the bottom of the liquid nitrogen conveying pipe extends to the bottom of the liquid nitrogen storage chamber; the heat insulation pipe is connected with the freezing probe through threads; accordingly the liquid nitrogen type femoral head necrosis model freezing meter has the advantages of simplifying the structure of a liquid nitrogen low temperature freezing system, being low in cost and reliable in performance, allowing liquid nitrogen spraying quantitatively, being controllable in femoral head necrosis range, small in size and handheld, satisfying a surgical aseptic requirement due to the fact that the stainless steel materials can be performed on high-temperature sterilization and being simple in operation, convenient to operate, time and labor saving, safe in structure, low in manufacturing cost and easy to produce.
Description
Technical field
This utility model relates to liquid nitrogen type femoral head necrosis model frigorimeter.
Background technology
Current: femur head necrosis sickness rate constantly increases in recent years, and age of onset is tending towards rejuvenation, its clinical symptoms is heavy, disability rate is high and treatment difficulty, seriously reduces patients ' life quality.And prepare the femur head necrosis movable model consistent with mankind's pathology to research femur head necrosis pathogenesis, diagnosis and treat significant.Liquid nitrogen can definitely cause osteonecrosis, advantage residual without chemical substance, low mortality of animals to be usually used in the preparation of femoral head necrosis model with it.Its theoretical foundation mainly comprises two aspects.1, liquid nitrogen freezing can coup injury osteocyte, medulla mesenchyma cell.2, low temperature causes that vasospasm, vascular endothelial cell are impaired, intravascular coagulation, vascular permeability increase, ischemical reperfusion injury after hemorrhage and rewarming occurs then, further bring out thrombosis, freezing region blood is for reducing, increase the weight of the damage of osteocyte, the necrosis of sclerotin.
The liquid nitrogen of take at present mainly contains three kinds of methods as basic femoral head modeling research: 1, freezing method at once: be and use cotton swab or the surface, gauze contact animal femoral head at weight loading region of soaking liquid nitrogen, cryolesion is conducted to the dark face of sclerotin by cartilage surface.Wherein liquid nitrogen cotton swab is at once freezing comparatively conventional.2, complete freezing method: be and fully expose animal femoral head, there are flexible plastic or the protection of aseptic foam in surrounding soft tissue, will carry out cryolesion in femoral head immersion and liquid nitrogen subsequently.3, freezing method in bone: perform the operation and prepare a space in femoral head Nei Jin subchondral bone district, liquid nitrogen is placed in to this space, carry out from inside to outside cryolesion.At once the freezing scope of freezing method is uncontrollable, and refrigerating effect is poor.Complete the freezing scope of freezing method is excessive, after these two kinds of methods all first cause femoral surface cartilage injury in addition, damages blood vessel in subchondral bone cell and bone again by conduction of heat, and damage process and mankind's pathological process are inconsistent.
Conzemius is the antecessor of freezing method in bone, and it is in the boring of Dromaius novaehollandiae femoral head neck place, and juxtaposition pipe is injected liquid nitrogen in femoral head and prepared femur necrosis model by this pipe.But because of insert pipe top body inner blood infiltrate and meet liquid nitrogen after freeze.Therefore refrigerating effect is undesirable.After this Fan M is used computer-controlled liquid nitrogen cryogenics refrigeration system to prepare femur head necrosis animal model, but this system cost is expensive, the bodily form is huge, is unfavorable for carrying out scientific research widely.
Utility model content
For overcoming above-mentioned defect, the purpose of this utility model is to provide liquid nitrogen type femoral head necrosis model frigorimeter; Can be freezing in bone for solving, cause osteonecrosis scope controlled, volume is little hand-holdable, can high-temperature sterilization, cheap femoral head necrosis model freezing equipment; By this designs simplification the structure of liquid nitrogen cryogenics refrigeration system, with low cost, dependable performance, can metered injection liquid nitrogen, little hand-holdable, the stainless steel material of controlled, the volume of femur head necrosis scope can high-temperature sterilization meet the aseptic requirement of operation; Simple to operate, convenient, time saving and energy saving, structural safety, cost of manufacture is low, is easy to produce.Can be widely used in diverse bone types research institute, medical colleges and schools, hospital and prepare femoral head necrosis model research.
For achieving the above object, the utility model discloses liquid nitrogen type femoral head necrosis model frigorimeter, it is comprised of cryoprobe, liquid nitrogen carrier pipe, instlated tubular, pressure valve, storage chamber lid, hand-held handle, liquid nitrogen storage chamber, thermal insulation layer; Liquid nitrogen storage chamber inside arranges thermal insulation layer, liquid nitrogen storage chamber outside is screwed hand-held handle, liquid nitrogen storage chamber top connects storage chamber lid, storage chamber covers pressure valve is set, and storage chamber lid center arranges circular port, circular port edge and instlated tubular bottom welding, circular port center is passed by liquid nitrogen carrier pipe, instlated tubular inside arranges liquid nitrogen carrier pipe, and liquid nitrogen carrier pipe bottom extends to liquid nitrogen storage chamber bottom always, and instlated tubular is connected with cryoprobe by screw thread.
Further, liquid nitrogen carrier pipe, instlated tubular, pressure valve, storage chamber lid are to be the structure that raw material is made and connect as one by rustless steel.
Liquid nitrogen carrier pipe is hollow tubular, external diameter 2mm, internal diameter 1mm; Liquid nitrogen carrier pipe bottom is 5mm from the distance of liquid nitrogen storage chamber bottom; Instlated tubular is hollow tubular, external diameter 9mm, internal diameter 6mm; Instlated tubular bottom and the welding of storage chamber lid, instlated tubular top is connected with cryoprobe by screw thread.
Pressure valve is connected and sealed interface with screw thread with storage chamber lid, and pressure valve top arranges nut; Be rotated counterclockwise nut and can open pressure valve, to reach liquid nitrogen storage chamber and atmospheric air pressure balance; Dextrorotation turn nut can closing presure valve, and making liquid nitrogen storage chamber is a closed cavity.
Storage chamber lid is circular bowl cover shape, and storage chamber lid center arranges circular port, circular port edge and instlated tubular welding, and circular port center is passed by liquid nitrogen carrier pipe.
Further, liquid nitrogen storage chamber, hand-held handle, thermal insulation layer are to be the structure that raw material is made and connect as one by rustless steel.
Liquid nitrogen storage chamber is cup-shaped structure, and the intracavity volume of liquid nitrogen storage chamber is 380ml; Liquid nitrogen storage chamber top is connected with storage chamber lid by screw thread, and detachable.
Heat insulation room is the hollow structure of liquid nitrogen storage chamber chamber wall.
Further, it is raw material that cryoprobe adopts rustless steel, and cryoprobe is hollow tubular, long: 10mm, external diameter: 3mm, internal diameter: 2mm.
Further, the operation principle of liquid nitrogen type femoral head necrosis model frigorimeter is: quantitative liquid nitrogen is placed in liquid nitrogen storage chamber, closing presure valve, utilize the characteristic of liquid nitrogen oneself volatilization, liquid nitrogen stores intraluminal fluid and constantly increases with upward pressure, liquid nitrogen is pressed in the liquid nitrogen carrier pipe of bottom, and is sprayed by cryoprobe.
Adopt said structure, this utility model has been simplified the structure of liquid nitrogen cryogenics refrigeration system, with low cost, dependable performance, can metered injection liquid nitrogen, little hand-holdable, the stainless steel material of controlled, the volume of femur head necrosis scope can high-temperature sterilization meet the aseptic requirement of operation; Simple to operate, convenient, time saving and energy saving, structural safety, cost of manufacture is low, is easy to produce.Can be widely used in diverse bone types research institute, medical colleges and schools, hospital and prepare femoral head necrosis model research.
Accompanying drawing explanation
Fig. 1 is tangent plane structural representation of the present utility model
The specific embodiment
Below in conjunction with accompanying drawing, this utility model is described in detail.
If Fig. 1 is structural representation of the present utility model, the utility model discloses liquid nitrogen type femoral head necrosis model frigorimeter,, it is comprised of cryoprobe 1, liquid nitrogen carrier pipe 2, instlated tubular 3, pressure valve 4, storage chamber lid 5, hand-held handle 7, liquid nitrogen storage chamber 6, thermal insulation layer 8, liquid nitrogen storage chamber 6 inside arrange heat insulation room 8, liquid nitrogen storage chamber 6 outsides are by the fixing hand-held handle 7 of screw (not shown), liquid nitrogen storage chamber 6 tops connect storage chamber lid 5, on storage chamber lid 5, pressure valve 4 is set, storage chamber covers 5 centers circular port (not shown) is set, circular port (not shown) edge and instlated tubular 3 bottom weldings, circular port (not shown) center is passed by liquid nitrogen carrier pipe 2, instlated tubular 3 inside arrange liquid nitrogen carrier pipe 2, liquid nitrogen carrier pipe 2 bottoms extend to liquid nitrogen storage chamber 6 bottoms always, instlated tubular 3 is connected with cryoprobe 1 by screw thread (not shown).
Further, liquid nitrogen carrier pipe 2, instlated tubular 3, pressure valve 4, storage chamber lid 5 are to be the structure that raw material is made and connect as one by rustless steel.
Liquid nitrogen carrier pipe 2 is hollow tubular, external diameter 2mm, internal diameter 1mm; Liquid nitrogen carrier pipe 2 bottoms are 5mm from the distance of liquid nitrogen storage chamber 6 bottoms; Instlated tubular 3 is hollow tubular, external diameter 9mm, internal diameter 6mm; Instlated tubular 3 bottoms and the welding of storage chamber lid, instlated tubular 3 tops are connected with cryoprobe 1 by screw thread (not shown).
Pressure valve 4 is connected and sealed interface with screw thread (not shown) with storage chamber lid 5, and pressure valve 4 tops arrange nut (not marking in figure); Be rotated counterclockwise nut (not marking in figure) and can open pressure valve 4, to reach liquid nitrogen storage chamber 6 and atmospheric air pressure balance; Dextrorotation turn nut (in figure mark) can closing presure valve 4, and making liquid nitrogen storage chamber 6 is a closed cavity.
Storage chamber lid 5 is circular bowl cover shape, and storage chamber covers 5 centers circular port (not shown) is set, circular port (not shown) edge and instlated tubular 3 welding, and circular port (not shown) center is passed by liquid nitrogen carrier pipe 2.
Further, liquid nitrogen storage chamber 6, hand-held handle 7, thermal insulation layer 8 are to be the structure that raw material is made and connect as one by rustless steel.
Liquid nitrogen storage chamber 6 is cup-shaped structure, and the intracavity volume of liquid nitrogen storage chamber 6 is 380ml; Liquid nitrogen storage chamber 6 tops are connected with storage chamber lid 5 by screw thread (not shown), and detachable.
Heat insulation room 8 is the hollow structure of liquid nitrogen storage chamber 6 chamber walls.
Further, it is raw material that cryoprobe 1 adopts rustless steel, and cryoprobe 1 is hollow tubular, long: 10mm, external diameter: 3mm, internal diameter: 2mm.
Further, the operation principle of liquid nitrogen type femoral head necrosis model frigorimeter is: quantitative liquid nitrogen is placed in liquid nitrogen storage chamber 6, closing presure valve 4, utilize the characteristic of liquid nitrogen oneself volatilization, the interior liquid of liquid nitrogen storage chamber 6 and constantly increasing with upward pressure, liquid nitrogen is pressed into the bottom of liquid nitrogen carrier pipe 2, and is sprayed by cryoprobe.
Further, operation instruction: cryoprobe 1 is connected to femoral head direction with animal femoral neck, and in bone inner tunnel communicate (bone inner tunnel diameter >3mm, does not affect femoral head mechanical property); To liquid nitrogen storage chamber 6, insert quantitative liquid nitrogen, closing presure valve 4, first inserts suction device in a side seam inner tunnel, and another side seam inner tunnel is inserted liquid nitrogen type femoral head necrosis model frigorimeter.Treat to extract cryoprobe 1 after liquid nitrogen spray.
Below be only that given with reference to the accompanying drawings embodiment makes specific descriptions; not this utility model to be done to the restriction of its form; to one skilled in the art, the modification of making in content basis disclosed in the utility model, still belongs to the protection domain of technical solutions of the utility model.
Claims (8)
1. liquid nitrogen type femoral head necrosis model frigorimeter, is characterized in that: it is comprised of cryoprobe, liquid nitrogen carrier pipe, instlated tubular, pressure valve, storage chamber lid, hand-held handle, liquid nitrogen storage chamber, thermal insulation layer; Liquid nitrogen storage chamber inside arranges thermal insulation layer, liquid nitrogen storage chamber outside is screwed hand-held handle, liquid nitrogen storage chamber top connects storage chamber lid, storage chamber covers pressure valve is set, and storage chamber lid center arranges circular port, circular port edge and instlated tubular bottom welding, circular port center is passed by liquid nitrogen carrier pipe, instlated tubular inside arranges liquid nitrogen carrier pipe, and liquid nitrogen carrier pipe bottom extends to liquid nitrogen storage chamber bottom always, and instlated tubular is connected with cryoprobe by screw thread.
2. liquid nitrogen type femoral head necrosis model frigorimeter according to claim 1, is characterized in that: described liquid nitrogen carrier pipe, instlated tubular, pressure valve, storage chamber lid are to be the structure that raw material is made and connect as one by rustless steel.
3. liquid nitrogen type femoral head necrosis model frigorimeter according to claim 1, is characterized in that: described liquid nitrogen carrier pipe is hollow tubular external diameter 2mm, internal diameter 1mm; Liquid nitrogen carrier pipe bottom is 5mm from the distance of liquid nitrogen storage chamber bottom; Instlated tubular is hollow tubular, external diameter 9mm, internal diameter 6mm.
4. liquid nitrogen type femoral head necrosis model frigorimeter according to claim 1, is characterized in that: described pressure valve is connected also sealed interface with storage chamber lid with screw thread, and pressure valve top arranges nut; Storage chamber lid is circular bowl cover shape, and storage chamber lid center arranges circular port, circular port edge and instlated tubular welding, and circular port center is passed by liquid nitrogen carrier pipe.
5. liquid nitrogen type femoral head necrosis model frigorimeter according to claim 1, is characterized in that: described liquid nitrogen storage chamber, hand-held handle, thermal insulation layer are to be the structure that raw material is made and connect as one by rustless steel.
6. liquid nitrogen type femoral head necrosis model frigorimeter according to claim 1, is characterized in that: described liquid nitrogen storage chamber is cup-shaped structure, and the intracavity volume of liquid nitrogen storage chamber is 380ml.
7. liquid nitrogen type femoral head necrosis model frigorimeter according to claim 1, is characterized in that: described thermal insulation layer is the hollow structure of liquid nitrogen storage chamber chamber wall.
8. liquid nitrogen type femoral head necrosis model frigorimeter according to claim 1, is characterized in that: it is raw material that described cryoprobe adopts rustless steel, and cryoprobe is hollow tubular, long: 10mm, external diameter: 3mm, internal diameter: 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420169189.2U CN203841829U (en) | 2014-04-10 | 2014-04-10 | Liquid nitrogen type femoral head necrosis model freezing meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420169189.2U CN203841829U (en) | 2014-04-10 | 2014-04-10 | Liquid nitrogen type femoral head necrosis model freezing meter |
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| Publication Number | Publication Date |
|---|---|
| CN203841829U true CN203841829U (en) | 2014-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420169189.2U Expired - Fee Related CN203841829U (en) | 2014-04-10 | 2014-04-10 | Liquid nitrogen type femoral head necrosis model freezing meter |
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| Country | Link |
|---|---|
| CN (1) | CN203841829U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107898553A (en) * | 2017-12-06 | 2018-04-13 | 王玲 | Hand-held frigorimeter |
-
2014
- 2014-04-10 CN CN201420169189.2U patent/CN203841829U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107898553A (en) * | 2017-12-06 | 2018-04-13 | 王玲 | Hand-held frigorimeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20160410 |