CN111265758A - Tear type vascular sheath - Google Patents

Tear type vascular sheath Download PDF

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Publication number
CN111265758A
CN111265758A CN202010224484.3A CN202010224484A CN111265758A CN 111265758 A CN111265758 A CN 111265758A CN 202010224484 A CN202010224484 A CN 202010224484A CN 111265758 A CN111265758 A CN 111265758A
Authority
CN
China
Prior art keywords
sheath
tearable
expansion
tube
seat
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
Application number
CN202010224484.3A
Other languages
Chinese (zh)
Inventor
戴华英
郭广军
回广雷
张昆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Secco Kell Technology Co ltd
Original Assignee
Tianjin Secco Kell Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tianjin Secco Kell Technology Co ltd filed Critical Tianjin Secco Kell Technology Co ltd
Priority to CN202010224484.3A priority Critical patent/CN111265758A/en
Publication of CN111265758A publication Critical patent/CN111265758A/en
Pending legal-status Critical Current

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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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0194—Tunnelling catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0169—Exchanging a catheter while keeping the guidewire in place
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00477—Coupling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00743—Type of operation; Specification of treatment sites
    • A61B2017/00778—Operations on blood vessels
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0194—Tunnelling catheters
    • A61M2025/0197—Tunnelling catheters for creating an artificial passage within the body, e.g. in order to go around occlusions

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Biophysics (AREA)
  • Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

The invention provides a novel tearable vascular sheath which comprises a tearable sheath and an expansion tube, wherein the tearable sheath comprises a tearable sheath tube body and a tearable sheath tube seat, the top of the tearable sheath tube seat is designed in a plane, so that fingers can conveniently press in an operation to prevent blood return, the expansion tube comprises a tube body and an expansion tube seat, and the tearable sheath and the expansion tube are clamped and connected so as to be suitable for separating the tearable sheath tube and the expansion tube without rotating. The invention has the beneficial effects that: the invention has simple and reasonable structure, reliable assembly and locking, easy tearing and convenient operation, can reduce the damage to blood vessels in the operation process, can tear the sheath tube for use, and can press the handles at the two sides of the expansion tube seat when the expansion tube is withdrawn, so that the clamping blocks at the front end of the expansion tube arm are opened to realize smooth withdrawal.

Description

Tear type vascular sheath
Technical Field
The invention relates to the field of interventional diagnosis and treatment auxiliary medical instruments, in particular to a tearable vascular sheath.
Background
The instruments such as catheter, stent, guide wire, electrode, etc. used for minimally invasive interventional therapy enter the target position from outside the body through blood vessel, and before all the instruments enter the blood vessel, a smooth effective channel must be established in the outside and under the skin of human body. The blood vessel sheath is a key apparatus for establishing the channel, and the main method is that the puncture needle penetrates into the blood vessel from the skin of the human body, the puncture guide wire is used for withdrawing the puncture needle after entering the blood vessel from the inner cavity of the puncture needle, the tear-off blood vessel sheath enters the blood vessel of the human body along the guide wire, and the guide wire is withdrawn. The establishment of the passage with the blood vessel of the human body from the outside is completed. The traditional vascular sheath does not need to be withdrawn midway until the operation is finished, and then the vascular sheath is withdrawn. In a partial interventional operation, for example, when a cardiac pacemaker is implanted, after an electrophysiology catheter or other instruments enter a human blood vessel, a blood vessel sheath needs to be withdrawn, but the rear section of the instrument which enters the human blood vessel is large, the blood vessel sheath cannot be directly withdrawn, and at the moment, the blood vessel sheath needs to be withdrawn and torn at the same time.
Along with intervention treatment's development, some problems have also appeared simultaneously in the current type vascular sheath that can tear open, tear on the market most sheath tube seats of sheath and expansion tube seat and adopt threaded connection's mode, when withdrawing from the expansion tube in the operation, need to separate expansion tube seat and sheath tube seat soon, the operation difficulty, waste time and energy, the screw thread of design on sheath tube seat can not effectively prevent in the art to return the blood.
Disclosure of Invention
The invention overcomes the defects in the prior art and provides a tear-open vascular sheath.
The purpose of the invention is realized by the following technical scheme.
The utility model provides a novel can tear type vascular sheath, includes that one can tear sheath pipe and an expansion pipe, can tear the sheath pipe by the sheath pipe body of tearing that is connected and can tear the sheath pipe seat and constitute, the expansion pipe constitute by the expansion pipe body and the expansion pipe seat that are connected, can tear the sheath pipe seat with the expansion pipe seat joint is in order being applicable to and need not to rotate and can separate the two, just can tear the sheath pipe seat with the one end of expansion pipe seat joint is the plane.
Furthermore, the expansion pipe seat and the tearable sheath pipe seat can be clamped by rotating 90 degrees.
Further, can tear the sheath pipe with the expansion pipe passes through the buckle joint.
Furthermore, the top of the sheath tube capable of being torn is provided with a convex block.
Furthermore, an expansion pipe arm is arranged on a pipe seat of the expansion pipe, and a clamping block clamped with the convex block is arranged at the front end of the expansion pipe arm.
Furthermore, the expansion pipe arm is made of flexible materials.
Furthermore, the outer surface of the tearable sheath tube body is provided with a pair of symmetrical tearable seams which are convenient for tearing.
Further, the tearable sheath base is provided with two wing-shaped handles, and two tear grooves formed in the middle of the two wing-shaped handles correspond to the tear seams.
Further, the tearable sheath tube seat and the tearable sheath tube body, and the expandable tube body and the expandable tube seat are connected together through an injection molding process respectively.
Further, the end portions of the tearable sheath tube body and the expanding tube body are tapered, and the head portion is arc-shaped.
The invention has the beneficial effects that:
the invention designs a clamping buckle type structure scheme, a sheath tube seat and an expansion tube seat are clamped by a buckle, when the expansion tube is withdrawn, a handle is pressed down, a clamp is opened, and the withdrawal is smooth;
the clamping of the expansion tube seat and the sheath tube seat can realize the clamping by rotating 90 degrees;
the plane design of the clamping position of the sheath tube seat is convenient for preventing blood return in the operation;
forming symmetrical tearing lines on the outer surface of the pipe to enable the pipe to be torn along an axial straight line;
the tearable sheath tube seat and the tearable sheath tube body are connected together through an injection molding process, so that the tearable sheath tube body and the tearable sheath tube seat which are difficult to fuse or bond with other materials can be firmly connected together;
the head parts of the tearable sheath tube and the expansion tube are tapered, and the head parts are arc-shaped, so that the damage to blood vessels or human tissues when the tearable sheath enters a human body is reduced.
The invention has simple and reasonable structure, reliable assembly and locking, easy tearing and convenient operation, can reduce the damage to blood vessels in the operation process, can tear the sheath tube for use, and presses the two handles of the expansion tube arm when the expansion tube is withdrawn, so that the clamping block at the front end of the expansion tube arm is opened to realize smooth withdrawal.
Drawings
FIG. 1 is a schematic view of the assembled structure of the present invention;
FIG. 2 is a schematic structural view of a tearable sheath according to the present invention;
FIG. 3 is a schematic structural view of the stent of the present invention;
FIG. 4 is a schematic structural view of the tearable sheath holder of the present invention;
in the figure:
1. the sheath tube can be torn open; 2. an expansion tube; 3. a dilation tube body; 4. expanding the tube seat; 5. an expansion tube arm;
6. a clamping block; 7. a raised block; 8. the sheath tube body can be torn; 9. the sheath tube seat can be torn open; 10. clamping the joint;
11. a wing-shaped handle; 12. a tearing groove; 13. and (4) a plane.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
Example 1
As shown in fig. 1-4, a novel tearable vascular sheath comprises a tearable sheath 1 and an expansion tube 2, wherein the tearable sheath 1 comprises a tearable sheath 8 and a tearable sheath base 9, the expansion tube 2 comprises an expansion tube body 3 and an expansion base 4, the tearable sheath base 9 and the expansion base 4 are connected in a clamping manner so as to be suitable for being separated without rotation, one end of the tearable sheath base 9 connected in a clamping manner with the expansion base 4 is a plane 13, and the plane 13 is convenient for finger pressing to prevent blood return when in use.
The outer surface of the tearable sheath tube body 8 is provided with a pair of tear seams which are symmetrical and convenient to tear, so that the tube can be torn along an axial straight line, the tearable sheath tube seat 9 is provided with two wing-shaped handles 11, and two tear grooves 12 formed in the middle of the two wing-shaped handles 11 correspond to the tear seams; the tearable sheath tube seat 1 and the tearable sheath tube body 8 are connected together through an injection molding process, and the expansion tube body 3 and the expansion tube seat 4 are also connected through an injection molding process.
Example 2
As shown in fig. 1-4, a novel tearable sheath catheter comprises a tearable sheath catheter 1 and an expansion catheter 2, wherein the tearable sheath catheter 1 comprises a tearable sheath catheter body 8 and a tearable sheath catheter seat 9, the expansion catheter 2 comprises an expansion catheter body 3 and an expansion catheter seat 4, the tearable sheath catheter seat 9 is connected with the expansion catheter seat 4 in a clamping manner so as to be suitable for being separated without rotating, one end of the tearable sheath catheter seat 9 connected with the expansion catheter seat 4 in a clamping manner is a plane 13, the plane 13 is convenient for pressing by fingers to prevent blood return when in use, and the expansion catheter seat 4 and the tearable sheath catheter seat 9 can be connected in a clamping manner of rotating 90 degrees; the ends of the tube bodies of the sheath tube body 8 and the expansion tube 2 can be torn to be tapered, and the head parts are arc-shaped.
Can tear 8 external surfaces of sheath pipe and have a pair of symmetrical tear seam of being convenient for to tear, can tear and have two wing handles 11 on the sheath pipe seat 9 to two tear groove 12 that form in the middle of two wing handles 11 are corresponding with tearing the seam, can tear sheath pipe seat 1 and can tear sheath pipe 8 and link together through the technology of moulding plastics, and expansion pipe body 3 also is the technology of moulding plastics with expansion pipe seat 4 and is connected.
Example 3
As shown in fig. 1-4, a novel tearable sheath catheter comprises a tearable sheath catheter 1 and an expansion catheter 2, wherein the tearable sheath catheter 1 comprises a tearable sheath catheter body 8 and a tearable sheath catheter seat 9, the expansion catheter 2 comprises an expansion catheter body 3 and an expansion catheter seat 4, the tearable sheath catheter seat 9 is connected with the expansion catheter seat 4 in a clamping manner so as to be suitable for being separated without rotating, one end of the tearable sheath catheter seat 9 connected with the expansion catheter seat 4 in a clamping manner is a plane 13, the plane 13 is convenient for pressing by fingers to prevent blood return when in use, and the expansion catheter seat 4 and the tearable sheath catheter seat 9 can be connected in a clamping manner of rotating 90 degrees;
the outer surface of the tearable sheath tube body 8 is provided with a pair of tear seams which are symmetrical and convenient to tear, the tearable sheath tube seat 9 is provided with two wing-shaped handles 11, and two tear grooves 12 formed in the middle of the two wing-shaped handles 11 correspond to the tear seams;
the tearable sheath tube seat 1 and the tearable sheath tube body 8 are connected together through an injection molding process, and the expansion tube body 3 and the expansion tube seat 4 are also connected through the injection molding process; the ends of the sheath tube body 8 and the expansion tube body 3 can be torn to be gradually thinned, and the head is arc-shaped.
Can tear sheath pipe 1 and expansion pipe 2 and pass through the buckle joint, can tear the top of sheath pipe 1 and be equipped with protruding piece 7, be equipped with expansion tube arm 5 on the expansion tube socket 4, the front end of expansion tube arm 5 is equipped with the fixture block 6 with protruding piece 7 joint, and expansion tube arm 5 is flexible material. Tear sheath tube seat 9 and use buckle joint with expansion tube seat 4, when waiting to withdraw from expansion pipe 2, press expansion pipe arm 5, the fixture block 6 of expansion pipe arm 5 front end opens, makes the smooth-going separation of the two.
The working mode is as follows:
can tear sheath 1 and expansion pipe 2, before the operation, need insert into can tearing sheath 1 with expansion pipe 2 from can tearing sheath seat 9 top, make expansion pipe seat 4 and can tear sheath seat 9 and pass through protruding piece 7 and fixture block 6 joint locking. The guide wire exposed end which enters a puncture blood vessel penetrates into the head cavity of the expansion tube body 3 on the tear-off type blood vessel sheath which is reliably locked, the guide wire is fixed and is fixed, the sheath tube 1 can be torn off by pushing along the guide wire until the sheath tube 1 can be torn off and enters the blood vessel, the blood vessel sheath is fixed and is fixed, the guide wire is withdrawn, the expansion tube arm handle 12 is pinched off to release the locking of the expansion tube arm handle and the tear-off sheath tube 1, the sheath tube 1 can be fixed and torn off and is fixed, the expansion tube 2 is withdrawn, other instruments can be placed along the inner cavity of the tear-off sheath tube 1, when the sheath tube 1 needs to be withdrawn and can be torn off, the two wing-shaped handles 11 can be torn off while withdrawing, and.
The three embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (10)

1. A novel tear-open vascular sheath is characterized in that: including one can tear sheath pipe and an expansion pipe, can tear the sheath pipe by the sheath pipe body of tearing that is connected and can tear the sheath pipe seat and constitute, the expansion pipe constitute by the expansion pipe body that is connected and expansion pipe seat, can tear the sheath pipe seat with the expansion pipe seat joint can separate the two in order being applicable to and need not to rotate, just can tear the sheath pipe seat with the one end of expansion pipe seat joint is the plane.
2. The novel tearable vascular sheath of claim 1, wherein: the expansion pipe seat and the tearable sheath pipe seat can be clamped by rotating 90 degrees.
3. The novel tearable vascular sheath of claim 2, wherein: the sheath tube can be torn and the expansion tube is clamped through a buckle.
4. The novel tearable vascular sheath of claim 3, wherein: the top of the sheath tube capable of being torn is provided with a convex block.
5. The novel tearable vascular sheath of claim 4, wherein: an expansion pipe arm is arranged on a pipe seat of the expansion pipe, and a clamping block clamped with the convex block is arranged at the front end of the expansion pipe arm.
6. The novel tearable vascular sheath of claim 5, wherein: the expansion pipe arm is made of flexible materials.
7. The novel tearable vascular sheath of any one of claims 1 to 6, wherein: the outer surface of the tearable sheath tube body is provided with a pair of symmetrical tearable seams which are convenient for tearing.
8. The novel tearable vascular sheath of claim 7, wherein: the tearable sheath base is provided with two wing-shaped handles, and two tearable grooves formed in the middle of the two wing-shaped handles correspond to the tearable seams.
9. The novel tearable vascular sheath of claim 7, wherein: the tearable sheath tube seat and the tearable sheath tube body as well as the expansion tube body and the expansion tube seat are respectively connected together through an injection molding process.
10. The novel tearable vascular sheath of claim 9, wherein: the end parts of the tearable sheath tube body and the expanding tube body are gradually thinned, and the head part is arc-shaped.
CN202010224484.3A 2020-03-26 2020-03-26 Tear type vascular sheath Pending CN111265758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010224484.3A CN111265758A (en) 2020-03-26 2020-03-26 Tear type vascular sheath

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010224484.3A CN111265758A (en) 2020-03-26 2020-03-26 Tear type vascular sheath

Publications (1)

Publication Number Publication Date
CN111265758A true CN111265758A (en) 2020-06-12

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CN202010224484.3A Pending CN111265758A (en) 2020-03-26 2020-03-26 Tear type vascular sheath

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112717269A (en) * 2021-01-07 2021-04-30 上海翰凌医疗器械有限公司 Vascular sheath device, vascular sheath device and cooperation structure of expander in advance
CN113398463A (en) * 2021-06-17 2021-09-17 丰凯医疗器械（上海）有限公司 Envelope and pump blood pipe that use with pump blood pipe cooperation

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003154013A (en) * 2001-09-10 2003-05-27 Kawasumi Lab Inc Catheter introducer
JP2003265618A (en) * 2002-03-18 2003-09-24 Jiima Kk Introducer
JP2012135579A (en) * 2010-12-28 2012-07-19 Terumo Corp Introducer assembly
CN102811760A (en) * 2010-03-15 2012-12-05 泰尔茂株式会社 Introducer assembly
CN202892618U (en) * 2012-06-29 2013-04-24 北京迪玛克医药科技有限公司 Vascular sheath capable of being torn
US20140025036A1 (en) * 2011-04-01 2014-01-23 Access Scientific, Llc Access device
JP2014223273A (en) * 2013-04-26 2014-12-04 クリエートメディック株式会社 Obturator
CN204655753U (en) * 2015-05-06 2015-09-23 深圳市顺美医疗科技有限公司 A kind of teeth engaged type catheter sheath
CN204910436U (en) * 2015-08-28 2015-12-30 深圳市昕力医疗设备开发有限公司 Can tear sheath
CN205019569U (en) * 2015-07-16 2016-02-10 上海千山医疗科技有限公司 Ureter guide sheath
CN206809530U (en) * 2016-09-26 2017-12-29 广东百合医疗科技股份有限公司 The anti-tearable vaginal that backflows of one kind
CN207575512U (en) * 2017-06-02 2018-07-06 安徽中荣医疗器械有限公司 A kind of plant medicine needle with drug storage
CN209122309U (en) * 2018-10-15 2019-07-19 荆州市益海科技有限公司 Ureter guide sheath
CN213312775U (en) * 2020-03-26 2021-06-01 天津迪玛克医药科技有限公司 Tear type vascular sheath

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003154013A (en) * 2001-09-10 2003-05-27 Kawasumi Lab Inc Catheter introducer
JP2003265618A (en) * 2002-03-18 2003-09-24 Jiima Kk Introducer
CN102811760A (en) * 2010-03-15 2012-12-05 泰尔茂株式会社 Introducer assembly
JP2012135579A (en) * 2010-12-28 2012-07-19 Terumo Corp Introducer assembly
US20140025036A1 (en) * 2011-04-01 2014-01-23 Access Scientific, Llc Access device
CN202892618U (en) * 2012-06-29 2013-04-24 北京迪玛克医药科技有限公司 Vascular sheath capable of being torn
JP2014223273A (en) * 2013-04-26 2014-12-04 クリエートメディック株式会社 Obturator
CN204655753U (en) * 2015-05-06 2015-09-23 深圳市顺美医疗科技有限公司 A kind of teeth engaged type catheter sheath
CN205019569U (en) * 2015-07-16 2016-02-10 上海千山医疗科技有限公司 Ureter guide sheath
CN204910436U (en) * 2015-08-28 2015-12-30 深圳市昕力医疗设备开发有限公司 Can tear sheath
CN206809530U (en) * 2016-09-26 2017-12-29 广东百合医疗科技股份有限公司 The anti-tearable vaginal that backflows of one kind
CN207575512U (en) * 2017-06-02 2018-07-06 安徽中荣医疗器械有限公司 A kind of plant medicine needle with drug storage
CN209122309U (en) * 2018-10-15 2019-07-19 荆州市益海科技有限公司 Ureter guide sheath
CN213312775U (en) * 2020-03-26 2021-06-01 天津迪玛克医药科技有限公司 Tear type vascular sheath

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112717269A (en) * 2021-01-07 2021-04-30 上海翰凌医疗器械有限公司 Vascular sheath device, vascular sheath device and cooperation structure of expander in advance
CN112717269B (en) * 2021-01-07 2021-11-12 上海翰凌医疗器械有限公司 Vascular sheath device, vascular sheath device and cooperation structure of expander in advance
CN113398463A (en) * 2021-06-17 2021-09-17 丰凯医疗器械（上海）有限公司 Envelope and pump blood pipe that use with pump blood pipe cooperation
CN113398463B (en) * 2021-06-17 2024-03-01 丰凯利医疗器械(上海)有限公司 Envelope and pump blood pipe that cooperation was used with pump blood pipe

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