CN210750819U - Balloon dilatation catheter capable of injecting medicine - Google Patents

Balloon dilatation catheter capable of injecting medicine Download PDF

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Publication number
CN210750819U
CN210750819U CN201920126673.XU CN201920126673U CN210750819U CN 210750819 U CN210750819 U CN 210750819U CN 201920126673 U CN201920126673 U CN 201920126673U CN 210750819 U CN210750819 U CN 210750819U
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China
Prior art keywords
catheter
sleeve
cavity
balloon
main body
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CN201920126673.XU
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Chinese (zh)
Inventor
钟旭飘
王峰
唐国胜
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Shenzhen meimeimeichuangyi Medical Technology Co.,Ltd.
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Mehow Innovative Ltd
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Abstract

The utility model discloses a balloon dilatation catheter capable of injecting medicine, which comprises a catheter main body and a balloon fixed on the catheter main body, wherein the catheter main body extends from a near end to a far end, the side wall of the catheter main body is provided with at least one medicine spraying hole, and the medicine spraying hole is positioned between the far end of the catheter main body and the balloon; the catheter main body is also internally provided with a guide wire cavity which runs through to the far end from the near end, an inflation cavity which runs through to be communicated with the balloon from the near end, and a medicine feeding cavity which runs through to be communicated with the medicine spraying hole from the near end. The utility model provides a sacculus expansion pipe is through setting up the medicine cavity and spouting the medicine hole, can adjust the type of dosing, dose and number of times according to the demand, compares with prior art's medicine elution sacculus pipe for it is corresponding to have more to intervene the treatment.

Description

Balloon dilatation catheter capable of injecting medicine
Technical Field
The utility model relates to the technical field of interventional medical equipment, concretely relates to balloon dilatation catheter capable of injecting medicine.
Background
The balloon dilatation catheter is a common medical intervention instrument and is widely applied to natural lumen stenosis dilatation operations of blood vessels, upper digestive tracts and the like at present. The balloon dilation catheter may have the following uses: (1) directly used as a pretreatment means, the balloon is expanded at a lesion part with certain filling pressure so as to expand a lesion lumen; (2) as a conveying carrier for stent implantation, the stent is expanded after being conveyed to a lesion part, and implantation of the stent is completed; (3) post-expanding the implanted stent to improve the wall-adhering effect of the stent. In the process of expanding a lesion lumen by adopting the balloon dilatation catheter, the problems of easy bleeding, restenosis and the like of a lesion part after expansion are generally solved. Therefore, during the interventional procedure, medication is usually administered in addition to the dilation.
The medicine spraying pipe is adopted to spray medicine to the expanded lesion part, so that thrombus can be dissolved, and the effects of stopping bleeding and expanding are achieved; the occurrence of a Drug Eluting balloon (DEB for short) relieves the problem of lumen restenosis to a certain extent, and drugs for resisting diseases such as lumen intimal hyperplasia and the like are coated on the surface of the balloon, and when the balloon reaches a lumen lesion part, the drugs are quickly released and transferred to the wall of the lesion lumen, so that the administration of the drugs to the wall of the lesion lumen can be realized. However, the insertion of a drug spray tube after balloon dilatation is easy to cause secondary injury to patients, and for DEB, the type and dosage of drugs are usually determined in production, and the drug is difficult to adjust according to the specific conditions of patients in the operation process.
SUMMERY OF THE UTILITY MODEL
The utility model provides a but injection sacculus expansion pipe for solve current sacculus expansion and intervene the treatment operation in-process, be difficult to realize dosing and control the problem of type and dosage of dosing to the pathological change position.
The utility model aims at providing a balloon dilatation catheter capable of injecting medicine, which comprises a catheter main body and a balloon fixed on the catheter main body, wherein the catheter main body extends from a near end to a far end, the side wall of the catheter main body is provided with at least one medicine spraying hole, and the medicine spraying hole is positioned between the far end of the catheter main body and the balloon; the catheter main body is also internally provided with a guide wire cavity which runs through to the far end from the near end, an inflation cavity which runs through to be communicated with the balloon from the near end, and a medicine feeding cavity which runs through to be communicated with the medicine spraying hole from the near end.
The catheter base is connected to the proximal end of the catheter main body and comprises a first connecting port, a second connecting port and a third connecting port, and the first connecting port is communicated with the guide wire cavity; the second connecting port is communicated with the inflation cavity; the third connecting port is communicated with the drug feeding cavity.
Further, the aperture of the spraying hole is 0.01mm to 2 mm.
Further, the balloon may be attached to the catheter body by means of gluing, hot-melt welding, high-frequency welding or laser welding.
Further, the distal end of the catheter main body comprises a soft head, and the soft head is made of at least one material of silica gel, polyether amide, nylon, thermoplastic polyurethane and polyvinyl chloride.
Furthermore, the catheter main body comprises a first sleeve, a second sleeve and a third sleeve which are sequentially sleeved from inside to outside, and a guide wire cavity is formed in the first sleeve; an inflation cavity is formed between the first sleeve and the second sleeve; a dosing cavity is formed between the second sleeve and the third sleeve; or the like, or, alternatively,
the catheter main body comprises an inner sleeve, an outer sleeve and at least one partition plate, and a guide wire cavity is formed inside the inner sleeve; the outer sleeve is sleeved on the outer portion of the inner sleeve and forms a cavity with the inner sleeve, and the partition plate is arranged between the inner sleeve and the outer sleeve and separates the cavity into an inflation cavity and a medicine feeding cavity.
The utility model provides a sacculus expansion pipe is through setting up the medicine cavity and spouting the medicine hole, can adjust the type of dosing, dose and number of times according to the demand, compares with prior art's medicine elution sacculus pipe for it is corresponding to have more to intervene the treatment.
Drawings
Fig. 1 is a schematic structural view of a balloon dilatation catheter with drug injection according to a first embodiment of the present invention.
Fig. 2 is a partially enlarged view of a position a in fig. 1.
Fig. 3 is a cross-sectional view taken at the position B-B in fig. 1.
Fig. 4 is a radial cross-sectional view of a catheter body in an alternative embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In the field of interventional medical devices, it is defined that the end relatively close to the operator is the proximal end and the end relatively far is the distal end.
Referring to fig. 1 to 3, a first embodiment of the present invention provides a drug-injectable balloon dilatation catheter, comprising a catheter main body 1 and a balloon 2 fixed on the catheter main body 1, wherein the catheter main body 1 extends from a proximal end to a distal end, and the sidewall thereof is provided with at least one drug spraying hole 10, and the drug spraying hole 10 is located between the distal end of the catheter main body 1 and the balloon 2; the catheter main body 1 is also internally provided with a guide wire cavity 11 which penetrates from the near end to the far end, an inflation cavity 12 which penetrates from the near end to be communicated with the balloon 2, and a drug delivery cavity 13 which penetrates from the near end to be communicated with the drug spraying hole 10.
The balloon dilatation catheter capable of injecting the medicine can be penetrated with a guide wire through the guide wire cavity 11; the balloon 2 can be inflated through the inflation cavity 12 to realize the expansion of the balloon 2; the medicine can be sprayed to the lesion part through the medicine feeding cavity 13 and the medicine spraying hole 10, and the medicine treatment of the lesion part is realized.
The balloon dilatation catheter provided by the embodiment is suitable for natural lumen stenosis dilatation operations such as blood vessels, upper digestive tracts and the like, does not need to insert the medicine spray pipe into the body of a patient again, and can adjust the administration type, dosage and times according to requirements, so that interventional therapy has pertinence.
Further, the drug-injectable balloon dilatation catheter further comprises a catheter holder 3, wherein the catheter holder 3 is connected to the proximal end of the catheter body 1 and comprises a first connecting port 31, a second connecting port 32 and a third connecting port 33, and the first connecting port 31 is communicated with the guide wire cavity 11; the second connecting port is communicated with the inflation cavity 12; the third connection port 33 communicates with the administration chamber 13.
Further, the catheter main body 1 comprises a first sleeve 1a, a second sleeve 1b and a third sleeve 1c which are sleeved from inside to outside in sequence, and a guide wire cavity 11 is formed inside the first sleeve 1 a; a gas-filled cavity 12 is formed between the first sleeve 1a and the second sleeve 1 b; the second sleeve 1b and the third sleeve 1c form a dosing cavity 13 therebetween. The catheter main body provided by the scheme is simple in structure, easy to manufacture and capable of effectively saving cost.
In the scheme, the spraying hole structure can be formed by forming a hole on the side wall of the third sleeve 1 c; it is desirable to provide an inflation channel sealed through the administration lumen 13, through which the inflation lumen 12 communicates with the balloon 2.
In an alternative embodiment of the present invention, as shown in fig. 4, the catheter main body includes an inner sleeve 1a ', an outer sleeve 1b ' and at least one partition board 1c ', and a guide wire cavity 11 ' is formed inside the inner sleeve 1a '; the outer sleeve 1b 'is sleeved between the outer part of the inner sleeve 1 a' and the inner sleeve 1a 'to form a cavity, and the partition plate 1 c' is arranged between the inner sleeve 1a 'and the outer sleeve 1 b' to separate the cavity into an inflation cavity 12 'and a dosing cavity 13'. This scheme can form the through-hole that spouts medicine hole and communicate with the gasbag through the direct trompil on outer sheathed tube pipe wall to the preparation degree of difficulty of pipe body has been reduced.
Furthermore, the aperture of the spraying holes is 0.005-2 mm, and the number of the spraying holes is 1-1002. In this embodiment, the aperture of the spraying holes is 0.5mm, and the number of the spraying holes is 24.
It should be noted that, the balloon dilatation catheter provided in this embodiment may be used to spray one or more active drugs, including but not limited to drugs for inhibiting vascular proliferation, anti-platelet drugs, anti-thrombotic drugs, or anti-inflammatory drugs. The angiogenesis inhibitor can be paclitaxel, rapamycin and its derivatives; the antiplatelet agent may be cilostazol; the antithrombotic agent may be heparin; the anti-inflammatory drug may be dexamethasone.
Further, the balloon may be made from a variety of materials, including, but not limited to, polyethylene terephthalate (PET), Polyetherimide (PEI), Polyethylene (PE), Polytetrafluoroethylene (PTFE), expanded polytetrafluoroethylene (ePTFE), ethylene tetrafluoroethylene copolymer (ETFE), Fluorinated Ethylene Propylene (FEP), Polyoxymethylene (POM), polybutylene terephthalate (PBT), block polyetherester, polyurethane, polypropylene (PP), polyvinyl chloride (PVC), polyetherester, polyester, polyamide, elastic polyamide, block polyamide/ester, block polyetheramide, silicone, Marlex high density polyethylene, Marlex low density polyethylene, linear low density polyethylene, Polyetheretherketone (PEEK), Polyimide (PI), polyphenylene sulfide (PPS), polyphenylene oxide (PPO), polysulfone, nylon, perfluoro (vinyl propyl ether) (PFA), one or a mixture of several of them.
Further, the balloon may be attached to the catheter body by means of bonding or laser welding.
Further, the distal end of the catheter main body comprises a soft head, and the soft head is made of one of silica gel, polyether amide, nylon, thermoplastic polyurethane and polyvinyl chloride. In this embodiment, the soft head is made of a silicone material.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims (6)

1. The drug-injectable balloon dilatation catheter is characterized by comprising a catheter main body and a balloon fixed on the catheter main body, wherein the catheter main body extends from the near end to the far end, the side wall of the catheter main body is provided with at least one drug spraying hole, and the drug spraying hole is positioned between the far end of the catheter main body and the balloon; the catheter main body is also internally provided with a guide wire cavity which runs through to the far end from the near end, an inflation cavity which runs through to be communicated with the balloon from the near end, and a medicine feeding cavity which runs through to be communicated with the medicine spraying hole from the near end.
2. The drug injectable balloon dilation catheter of claim 1 further comprising a catheter hub attached to the proximal end of the catheter body, the catheter hub comprising a first port, a second port and a third port, the first port communicating with the guidewire lumen; the second connecting port is communicated with the inflation cavity; the third connecting port is communicated with the drug feeding cavity.
3. The drug injectable balloon dilation catheter of claim 2 wherein the drug spray orifice has a diameter of 0.005mm to 2 mm.
4. The drug-injectable balloon dilation catheter of claim 3 wherein the balloon is attached to the catheter body by means of adhesive bonding, heat welding, high frequency welding or laser welding.
5. The drug-injectable balloon dilatation catheter as claimed in claim 3, wherein the catheter body comprises a first sleeve, a second sleeve and a third sleeve which are sleeved in sequence from inside to outside, and a guide wire cavity is formed inside the first sleeve; an inflation cavity is formed between the first sleeve and the second sleeve; and a dosing cavity is formed between the second sleeve and the third sleeve.
6. The drug injectable balloon dilatation catheter of claim 3 wherein the catheter body comprises an inner sleeve, an outer sleeve and at least one septum, the inner sleeve forming a guidewire lumen therein; the outer sleeve is sleeved outside the inner sleeve, a cavity is formed between the outer sleeve and the inner sleeve, and the partition plate is arranged between the inner sleeve and the outer sleeve and separates the cavity into an inflation cavity and a dosing cavity.
CN201920126673.XU 2019-01-24 2019-01-24 Balloon dilatation catheter capable of injecting medicine Active CN210750819U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920126673.XU CN210750819U (en) 2019-01-24 2019-01-24 Balloon dilatation catheter capable of injecting medicine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920126673.XU CN210750819U (en) 2019-01-24 2019-01-24 Balloon dilatation catheter capable of injecting medicine

Publications (1)

Publication Number Publication Date
CN210750819U true CN210750819U (en) 2020-06-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112870529A (en) * 2021-01-14 2021-06-01 辽宁垠艺生物科技股份有限公司 Multi-channel conduit
CN116549066A (en) * 2023-07-05 2023-08-08 北京久事神康医疗科技有限公司 Drug delivery cutting balloon catheter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112870529A (en) * 2021-01-14 2021-06-01 辽宁垠艺生物科技股份有限公司 Multi-channel conduit
CN112870529B (en) * 2021-01-14 2024-04-05 辽宁垠艺生物科技股份有限公司 Multi-channel catheter
CN116549066A (en) * 2023-07-05 2023-08-08 北京久事神康医疗科技有限公司 Drug delivery cutting balloon catheter
CN116549066B (en) * 2023-07-05 2023-09-26 北京久事神康医疗科技有限公司 Drug delivery cutting balloon catheter

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Address after: 518116 New Zhongqiao Industrial Park, No. 3, Baolong Six Road, Baolong Street, Longgang District, Shenzhen City, Guangdong Province, Building A, 101, 201, 601B, Building C, 101, 201 and 401 (There are operating sites in Dolly Industrial Park, Building A, No. 9 Jinlong Road, Baolong Street, Longgang District, Shenzhen City).

Patentee after: Shenzhen meimeimeichuangyi Medical Technology Co.,Ltd.

Address before: 518116 New Zhongqiao Industrial Park, No. 3, Baolong Six Road, Baolong Street, Longgang District, Shenzhen City, Guangdong Province, Building A, 101, 201, 601B, Building C, 101, 201 and 401 (There are operating sites in Dolly Industrial Park, Building A, No. 9 Jinlong Road, Baolong Street, Longgang District, Shenzhen City).

Patentee before: MEHOW INNOVATIVE Ltd.

CP01 Change in the name or title of a patent holder