CN117298440A - Blood pump outlet connecting structure - Google Patents
Blood pump outlet connecting structure Download PDFInfo
- Publication number
- CN117298440A CN117298440A CN202311598364.XA CN202311598364A CN117298440A CN 117298440 A CN117298440 A CN 117298440A CN 202311598364 A CN202311598364 A CN 202311598364A CN 117298440 A CN117298440 A CN 117298440A
- Authority
- CN
- China
- Prior art keywords
- clamp
- locking ring
- blood vessel
- pump outlet
- blood pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000008280 blood Substances 0.000 title claims abstract description 46
- 210000004369 blood Anatomy 0.000 title claims abstract description 46
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 49
- 239000002473 artificial blood Substances 0.000 claims abstract description 48
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 14
- 238000005452 bending Methods 0.000 claims description 11
- 230000002441 reversible effect Effects 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002792 vascular Effects 0.000 description 4
- 230000002861 ventricular Effects 0.000 description 4
- 230000003394 haemopoietic effect Effects 0.000 description 2
- 208000035965 Postoperative Complications Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M39/12—Tube connectors; Tube couplings for joining a flexible tube to a rigid attachment
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention provides a blood pump outlet connecting structure, which comprises a locking ring sleeved outside a blood pump outlet pipe, wherein an artificial blood vessel is sleeved outside the locking ring, a clamp used for locking the locking ring and the artificial blood vessel is sleeved on the artificial blood vessel, one side of the clamp is also connected with one end of a reinforcing sleeve sleeved on the artificial blood vessel, and the outer diameter of the locking ring is equal to the limit value of the inner diameter of the artificial blood vessel. The beneficial effects of the invention are at least as follows: the structure of the invention takes the artificial blood vessel, the reinforced sleeve and the clamp as a whole, and can be assembled and sterilized in a factory in advance, so that a doctor can smoothly install the artificial blood vessel, the reinforced sleeve and the clamp on the blood pump during operation, the structure is safe and reliable, the operation is easy, the operation time can be greatly saved, the disassembly and secondary use are convenient, and if a patient needs to perform pump replacement operation, the connection structure can be conveniently removed and replaced.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a blood pump outlet connecting structure.
Background
The left ventricular assist device, i.e., a human hematopoietic pump, is connected in parallel with the heart to simulate the function of ventricular blood transfusion, and pumps the ventricular blood into the arterial system to partially or completely replace the function of the heart, and is therefore also called an artificial heart. The blood pump is used for pumping blood and then is conveyed to an artery through an artificial blood vessel-reinforcing sleeve, the artificial blood vessel is responsible for conveying the blood, the reinforcing sleeve protects the blood vessel from deformation or even collapse of the blood vessel caused by extrusion of human tissues, normal conveying of the blood is affected, and the blood pump outlet pipe is connected with the artificial blood vessel-reinforcing sleeve through a special structure.
Because the thoracic cavity position space is smaller, the overall size of the left ventricular assist device cannot be larger, otherwise, the heart or peripheral tissues are easy to squeeze, postoperative complications are increased, and the success rate of the operation is reduced. Therefore, the whole size is required to be small and the structure is required to be compact. The outlet tube position of the blood pump requires doctors to assemble parts such as artificial blood vessels and reinforcing sleeves, so that the structure of the outlet tube position is required to be as simple and reliable as possible, the operation is simple and convenient, otherwise, the operation time is increased, if the outlet tube position is difficult to install or is installed for a plurality of times, the blood seepage risk is possibly caused by the fact that the outlet tube position is not assembled in place. The structure of the blood pump outlet is required to ensure that the artificial blood vessel is flat, any compression cannot occur, and smooth blood delivery is ensured, otherwise thrombus is easy to form at the blood pump outlet.
In the prior art, a human hematopoietic tube is sleeved on a blood pump outlet tube, and then the artificial blood vessel is hooped by other structures. Since the vascular prosthesis is a braid, it is soft and burrs are easily generated at the end. In addition, in order to ensure smooth blood flow, the inner diameter of the artificial blood vessel is usually in interference fit with the outer diameter of the blood pump outlet tube, and the blood vessel needs to be spread to be sleeved on the blood pump outlet tube. Therefore, the difficulty of practical assembly is great, and usually, the assembly is assisted by tools such as forceps, and burrs are easy to generate after the assembly (the forceps are pulled to cause the knitted fabric at the end to be scattered). And the doctor also is difficult to judge how much of vascular prosthesis should be sleeved, and too much is piled up at the end easily, causes the clamp to push away in place, and too little can cause vascular prosthesis to fix infirm, has the risk of oozing blood and coming off.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a blood pump outlet connecting structure which is compact in overall structure, convenient and quick to operate and capable of effectively saving operation time.
The aim of the invention is achieved by the following technical scheme:
the blood pump outlet connecting structure comprises a locking ring sleeved outside a blood pump outlet pipe, an artificial blood vessel is sleeved outside the locking ring, a clamp used for locking the locking ring and the artificial blood vessel is sleeved on the artificial blood vessel, one side of the clamp is also connected with one end of a reinforcing sleeve sleeved on the artificial blood vessel, and the outer diameter of the locking ring is equal to the limit value of the inner diameter of the artificial blood vessel.
Preferably, a clearance groove is arranged between the front section of the clamp and the rear section of the clamp, the clearance groove is a non-closed ring, the front section of the clamp is arranged outside the locking ring, and the rear section of the clamp is arranged outside the reinforcing sleeve.
Preferably, the section of the locking ring is of an L-shaped bending structure, and the clamping hoop and the locking ring are in pressure connection or threaded connection.
Preferably, the front end of the front section of the clamp is connected with the bending front end of the locking ring through threads, a group of C rings are arranged between the artificial blood vessel and the clamp, and inverted grooves are formed in the inner sides of the C rings.
Preferably, a cavity is formed in the position of a tool retracting groove at the tail end of the thread of the front section of the clamp, and the tail end of the front section of the clamp is coated outside the C ring.
Preferably, the outer side of the C ring is arranged in a taper manner.
Preferably, the clamp is in press-connection with the locking ring, and a gap between the outer diameter of the locking ring and the inner diameter of the clamp is smaller than the thickness of the artificial blood vessel.
Preferably, the locking ring is provided with a reverse groove on the outer side.
Preferably, the head of the front section of the clamping band is pressed and connected above the bending front end of the locking ring, and a cavity is arranged between the bending position of the locking ring and the front section of the clamping band.
Preferably, a positioning boss is arranged at one end of the reinforcing sleeve, and a positioning hole matched with the positioning boss is formed in the clamp.
The beneficial effects of the invention are at least as follows: the structure of the invention takes the artificial blood vessel, the reinforced sleeve and the clamp as a whole, and can be assembled and sterilized in a factory in advance, so that a doctor can smoothly install the artificial blood vessel, the reinforced sleeve and the clamp on the blood pump during operation, the structure is safe and reliable, the operation is easy, the operation time can be greatly saved, the disassembly and secondary use are convenient, and if a patient needs to perform pump replacement operation, the connection structure can be conveniently removed and replaced.
Drawings
Fig. 1 is an assembly schematic diagram of a connecting structure according to the present invention.
Fig. 2 is a schematic structural diagram of the connection structure of the present invention after connection with a blood pump.
Fig. 3 is a schematic diagram of one connection structure in an embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view of the blood pump of fig. 3 after connection.
Fig. 5 is an enlarged schematic view of a portion a in fig. 4.
Fig. 6 is a schematic view of a partially enlarged structure of another connection structure according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of a third connection structure according to an embodiment of the present invention.
Fig. 8 is a schematic cross-sectional view of the blood pump of fig. 7 after connection thereto.
Fig. 9 is an enlarged schematic view of a portion b in fig. 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to fig. 1 to 9 and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention discloses a blood pump outlet connecting structure, which comprises a locking ring 1004 sleeved outside a blood pump outlet tube 1001, wherein an artificial blood vessel 1006 is sleeved outside the locking ring 1004, a clamp 1003 used for locking the locking ring 1004 and the artificial blood vessel 1006 is sleeved on the artificial blood vessel 1006, and one side of the clamp 1003 is also connected with one end of a reinforcing sleeve 1007 sleeved on the artificial blood vessel 1006. The reinforcement sleeve 1007 may be placed over-kinked in the vascular prosthesis 1006. To ensure that the prosthesis 1006 does not buckle on the locking ring 1004, the outer diameter of the locking ring 1004 is comparable to the limit value of the inner diameter of the prosthesis 1006. The clamp 1003 is in press connection or threaded connection with the locking ring 1004.
The clamp 1003 comprises a clamp front section 12 and a clamp rear section 13, wherein a clearance groove is formed between the clamp front section 12 and the clamp rear section 13, and the clearance groove is a non-closed ring. The two-section clamp makes it possible to make the artificial blood vessel and the reinforcing sleeve not interfere with each other during locking. The front segment 12 of the clip is disposed outside the locking ring 1004, and the rear segment 13 of the clip is disposed outside the reinforcing sleeve 1007. One end of the reinforcing sleeve 1007 is provided with a positioning boss 10071, and the clamp 1003 is provided with a positioning hole 10031 which is matched with the positioning boss 10071. When the two are connected, the reinforcing sleeve 1007 is confirmed to be in place by the positioning boss 10071 being clamped into the positioning hole 10031 of the clamp 1003.
Referring to fig. 3 to fig. 5, when the clamp 1003 is screwed with the locking ring 1004, the specific structure is as follows: the cross section of the locking ring 1004 is of an L-shaped bending structure, the front end of the clamp front section 12 is connected with the bending front end of the locking ring 1004 through threads, a group of C rings 1005 are arranged between the artificial blood vessel 1006 and the clamp 1003, and a reverse groove is formed in the inner side of each C ring 1005.
When in installation, the artificial blood vessel 1006 is sleeved on the locking ring 1004, and then two C rings 1005 are concentrically buckled on the artificial blood vessel 1006. Then the clamp 1003 is buckled from the non-threaded end to the threaded end of the locking ring 1004, when the clamp 1003 tightly holds the two C rings 1005, the gap between the inner diameter of the C rings 1005 and the outer diameter of the locking ring 1004 is smaller than the thickness of the artificial blood vessel 1006, so that the artificial blood vessel 1006 is tightly pressed, and finally the threads are locked. By the inverted groove of the C-ring 1005, the artificial blood vessel 1006 can be further ensured not to fall off.
The cavity 11 is disposed at the position of the tool retracting groove at the threaded end of the front section 12 of the clamping band, the tail end of the front section of the clamping band 1003 is coated outside the C ring 1005, that is, the front end of the C ring 1005 is abutted with the bending end of the locking ring, and the rear end of the C ring 1005 is abutted with the rear side of the clamping band 1003.
When the artificial blood vessel 1006 is installed, if a wire end or a damaged edge occurs at the end, the wire end and the damaged edge can be pushed forward through the clamp 1003 to be placed in the cavity 11, so that the wire end and the damaged edge are ensured not to fall off.
As another embodiment of the connection structure, as shown in fig. 6, in the case that the rest of the structure is the same as that of the above embodiment, the difference is that the outer side of the C-ring 1005 is tapered, and correspondingly, the contact portions of the clip 1003 and the C-ring are provided with mutually matched tapers. The diameter of the C-ring 1005 is increased by the back-to-front assembly.
When the clamp 1003 is assembled, the clamp 1003 is buckled from the small diameter end to the large diameter end of the C ring 1005, when the clamp 1003 is contacted with the C ring 1005, namely, the C ring 1005 is pressed, because the structure has taper, when the clamp 1003 is buckled axially, the clamp 10031 presses the C ring 1005 more tightly, so that the artificial blood vessel 1006 is pressed, and finally, the threads are screwed.
Referring to fig. 7-9, when the clamp 1003 is press-connected to the locking ring 1004, a gap between an outer diameter of the locking ring 1004 and an inner diameter of the clamp is finally required to be smaller than a thickness of the artificial blood vessel, so that the artificial blood vessel 1006 is ensured not to fall off. At this time, a reverse groove is provided on the outer side of the locking ring 1004 to further enhance the non-falling-off of the artificial blood vessel 1006.
Specifically, the head of the front segment 12 is pressed and connected to the upper side of the bent front end of the locking ring 1004, and a cavity 11 is provided between the bent position of the locking ring 1004 and the front segment 12. The cavity 11 can also push the wire ends and damaged edges into the cavity when the wire ends or damaged edges are arranged at the end parts of the artificial blood vessel 1006 and can be pushed forward through the clamp 1003, so that the wire ends and the damaged edges are prevented from falling.
During installation, can cooperate the equipment ring 2002 to assist, namely use two equipment rings 2002 to hold tightly clamp 2003, through the boss in the middle of the equipment ring 2002, this boss can block into the gap in the middle of the clamp 1003 when holding tightly, holds the equipment ring 2002 when assembling, can guarantee that the clamp 1003 can not appear axial float when receiving axial force to influence the installation. At the same time, the collar 2002 protects the clamp 1003 from irreversible deformation when subjected to axial forces.
By axially fitting the clamp 1003 over the prosthesis 1006 and the clamp ring 1004, the fit is very tight, since the gap between the outer diameter of the clamp ring 1004 and the inner diameter of the clamp 1003 is smaller than the thickness of the prosthesis 1006, so that the prosthesis 1006 is not pulled out under pressure. Meanwhile, the locking ring 1004 is provided with a reverse groove, so that the artificial blood vessel 1006 is further prevented from falling off after assembly.
Further, the bent end of the locking ring 1004 can be matched with the clamp 1003 to perform an axial positioning function, so that the dislocation of the end face of the locking ring 1004 and the end face of the clamp can be prevented when the locking ring enters the clamp.
All parts of the invention are installed as a whole inside the factory. When the doctor uses the blood pump outlet tube 1001 is inserted into the locking ring 1004, and then the screw 1002 is locked. Therefore, the installation work of doctors is greatly reduced, the installation complexity is reduced, the operation time is saved, and errors caused by the insertion length between the blood pump outlet tube 1001 and the blood pump outlet tube are avoided.
Finally, it should be noted that: the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
And the above embodiments are only for illustrating the technical solution of the present invention, not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. Blood pump outlet connection structure, its characterized in that: the blood pump comprises a locking ring (1004) which is sleeved outside a blood pump outlet tube (1001), wherein an artificial blood vessel (1006) is sleeved outside the locking ring (1004), a clamp (1003) which is used for locking the locking ring (1004) and the artificial blood vessel (1006) is sleeved on the artificial blood vessel (1006), one side of the clamp (1003) is also connected with one end of a reinforcing sleeve (1007) sleeved on the artificial blood vessel (1006), and the outer diameter of the locking ring (1004) is equal to the limit value of the inner diameter of the artificial blood vessel (1006).
2. The blood pump outlet connection structure of claim 1, wherein: a clearance groove is formed between the front section of the clamp (1003) and the rear section (13) of the clamp, the clearance groove is a non-closed ring, the front section of the clamp is arranged outside the locking ring (1004), and the rear section of the clamp (1003) is arranged outside the reinforcing sleeve.
3. The blood pump outlet connection structure according to claim 2, wherein: the cross section of the locking ring (1004) is of an L-shaped bending structure, and the clamp (1003) and the locking ring (1004) are in pressure connection or threaded connection.
4. The blood pump outlet connection structure of claim 3, wherein: the front end of the clamp front section (12) is connected with the bending front end of the locking ring (1004) through threads, a group of C rings (1005) are arranged between the artificial blood vessel (1006) and the clamp (1003), and inverted grooves are formed in the inner sides of the C rings (1005).
5. The blood pump outlet connection structure of claim 4, wherein: the clamp is characterized in that a cavity (11) is formed in the position of a tool withdrawal groove at the tail end of a thread of the clamp front section (12), and the tail end of the clamp front section (12) is coated outside the C ring (1005).
6. The blood pump outlet connection structure of claim 4, wherein: the outer side of the C ring (1005) is arranged in a taper mode.
7. The blood pump outlet connection structure of claim 3, wherein: the clamp (1003) is in press connection with the locking ring (1004), and a gap between the outer diameter of the locking ring (1004) and the inner diameter of the clamp (1003) is smaller than the thickness of the artificial blood vessel (1006).
8. The blood pump outlet connection structure of claim 7, wherein: and a reverse groove is formed in the outer side of the locking ring (1004).
9. The blood pump outlet connection structure of claim 8, wherein: the head of the clamp front section (12) is in pressure connection with the upper part of the bending front end of the locking ring (1004), and a cavity is arranged between the bending part of the locking ring (1004) and the clamp front section (12).
10. The blood pump outlet connection structure of claim 1, wherein: one end of the reinforcing sleeve (1007) is provided with a positioning boss (10071), and the clamp (1003) is provided with a positioning hole (10031) matched with the positioning boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311598364.XA CN117298440A (en) | 2023-11-28 | 2023-11-28 | Blood pump outlet connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311598364.XA CN117298440A (en) | 2023-11-28 | 2023-11-28 | Blood pump outlet connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117298440A true CN117298440A (en) | 2023-12-29 |
Family
ID=89273950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311598364.XA Pending CN117298440A (en) | 2023-11-28 | 2023-11-28 | Blood pump outlet connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117298440A (en) |
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| JP2009254777A (en) * | 2007-07-19 | 2009-11-05 | National Cardiovascular Center | Connection unit and connection construction of artificial blood vessel or blood passage tube |
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| CN213589523U (en) * | 2020-09-24 | 2021-07-02 | 金华市中心医院 | Drainage bag conversion connecting device |
| CN218280318U (en) * | 2022-05-31 | 2023-01-13 | 深圳核心医疗科技有限公司 | Artificial blood vessel clamping device and blood pump |
| CN218391871U (en) * | 2022-05-31 | 2023-01-31 | 上海东心生物医疗科技有限公司 | Ventricular assist device outlet connection assembly |
| CN219231203U (en) * | 2022-07-12 | 2023-06-23 | 深圳核心医疗科技股份有限公司 | Clamp and blood pump |
-
2023
- 2023-11-28 CN CN202311598364.XA patent/CN117298440A/en active Pending
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|---|---|---|---|---|
| DE20214608U1 (en) * | 2002-09-16 | 2002-12-19 | Berlin Heart Ag | Device for connecting a pipe end made of flexible material with a spout |
| WO2007103464A2 (en) * | 2006-03-08 | 2007-09-13 | Orqis Medical Corporation | Blood conduit connector |
| JP2009254777A (en) * | 2007-07-19 | 2009-11-05 | National Cardiovascular Center | Connection unit and connection construction of artificial blood vessel or blood passage tube |
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| US20180193631A1 (en) * | 2017-01-12 | 2018-07-12 | Merit Medical Systems, Inc. | Methods and systems for selection and use of connectors between conduits |
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| CN211835566U (en) * | 2019-12-27 | 2020-11-03 | 深圳核心医疗科技有限公司 | Clamp and blood pump |
| CN211835567U (en) * | 2019-12-27 | 2020-11-03 | 深圳核心医疗科技有限公司 | Artificial blood vessel protection device and blood pump |
| CN213589523U (en) * | 2020-09-24 | 2021-07-02 | 金华市中心医院 | Drainage bag conversion connecting device |
| CN218280318U (en) * | 2022-05-31 | 2023-01-13 | 深圳核心医疗科技有限公司 | Artificial blood vessel clamping device and blood pump |
| CN218391871U (en) * | 2022-05-31 | 2023-01-31 | 上海东心生物医疗科技有限公司 | Ventricular assist device outlet connection assembly |
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