CN111617367A - Minimally invasive lead-in head for drug delivery - Google Patents

Minimally invasive lead-in head for drug delivery Download PDF

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Publication number
CN111617367A
CN111617367A CN202010597723.XA CN202010597723A CN111617367A CN 111617367 A CN111617367 A CN 111617367A CN 202010597723 A CN202010597723 A CN 202010597723A CN 111617367 A CN111617367 A CN 111617367A
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CN
China
Prior art keywords
tube
needle cylinder
needle
catheter
hose
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
CN202010597723.XA
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Chinese (zh)
Inventor
郭锦端
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202010597723.XA priority Critical patent/CN111617367A/en
Publication of CN111617367A publication Critical patent/CN111617367A/en
Pending legal-status Critical Current

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    • 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
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • 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
    • 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
    • A61M25/0102—Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod
    • 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
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0662—Guide tubes
    • A61M25/0668—Guide tubes splittable, tear apart
    • 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
    • A61M25/09—Guide wires
    • 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
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • A61M2025/0039—Multi-lumen catheters with stationary elements characterized by lumina being arranged coaxially
    • 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
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/12—Blood circulatory system

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

Abstract

The invention discloses a minimally invasive leading-in head for drug delivery, which structurally comprises an insertion tube and a guide tube, wherein the insertion tube and the guide tube are hollow, the insertion tube is inserted into the guide tube, the insertion tube consists of a needle cylinder, a needle cylinder limiting ring, a needle cylinder conical tube and a needle tube, the needle cylinder limiting ring is positioned at the tail part of the needle cylinder, the needle cylinder limiting ring and the needle cylinder conical tube are of an integrated structure, a hollow cylindrical buffer tube is arranged between the needle cylinder limiting ring and the needle cylinder conical tube, longitudinal groove patterns are arranged on the buffer tube, the needle cylinder conical tube is in a circular truncated cone shape, and the needle tube is positioned at the axis of the needle cylinder conical tube.

Description

Minimally invasive lead-in head for drug delivery
Technical Field
The invention relates to a minimally invasive introduction head for drug delivery, belonging to the field of medical equipment.
Background
The tube minimally invasive examination is one of interventional treatments, including blood vessel endoscopy, angiography, blood vessel percutaneous oxygen partial pressure measurement and the like, the current minimally invasive treatment is widely developed, an operator cannot move and adjust the position of a minimally invasive instrument in the insertion process, and the opening is still large due to the fact that the minimally invasive instrument is adjusted to adjust the position, the minimally invasive instrument is difficult to operate due to the blood pressure and the blood flow, and the position positioning is fuzzy.
Disclosure of Invention
In order to achieve the purpose, the invention is realized by the following technical scheme: a minimally invasive leading-in head for drug delivery structurally comprises a cannula and a conduit, wherein the cannula and the conduit are both hollow, and the cannula is inserted into the catheter and consists of a needle cylinder, a needle cylinder limiting ring, a needle cylinder taper tube and a needle tube, the syringe limiting ring is positioned at the tail part of the syringe, the syringe limiting ring and the syringe taper pipe are of an integrated structure, a hollow cylindrical buffer pipe is arranged between the syringe limiting ring and the syringe taper pipe, the buffer tube is provided with longitudinal groove patterns, the needle cylinder conical tube is in a circular truncated cone shape, the needle tube is positioned at the axis of the needle cylinder conical tube, the conduit consists of a conduit limiting ring, a conduit conical tube, a communicating pipe and a hose, a hollow cylindrical clamping tube is arranged between the conduit limiting ring and the conduit conical tube, the inner wall of the clamping tube is provided with longitudinal raised patterns corresponding to the buffer tube, the communicating tube is fixedly connected with the hose, the needle tube penetrates through the communicating tube and the hose, and the needle opening of the needle tube is positioned at the outer end of the hose.
In order to optimize the technical scheme, the method further comprises the following steps:
according to a preferable mode, the diameter of the needle cylinder limiting ring is larger than that of the needle cylinder, the diameter of the catheter limiting ring is larger than that of the catheter conical tube, and the inclination of the catheter conical tube is the same as that of the needle cylinder conical tube.
According to a preferred mode, the hose is hollow and cylindrical and is provided with a plurality of notches for bending the hose, the hose can be provided with one or more notches which are opened upwards, the direction of the notches is opposite, the hose can be used for bending a plurality of sections of the hose, and the hose can be made of soft polyvinyl chloride, polyurethane elastomer, polyamide such as polyamide elastomer and polyester elastomer and the like.
According to a preferred mode, the needle tube is used for inserting into a blood vessel to enable the soft tube to enter into the blood vessel.
According to a preferred mode, the cannula can be extracted from the catheter and inserted into a guide wire for introducing minimally invasive instruments, which guide wire is to be inserted inside the blood vessel.
According to a preferred form, rotating the cannula serves to rotate the flexible tube within the blood vessel.
According to a preferred mode, the bottom of the communicating pipe is adhered with a medical cotton pad.
According to a preferable mode, the catheter conical tube and the syringe conical tube can be made of hard resin or metal.
Advantageous effects
The invention has simple operation, small wound and difficult puncture of blood vessels in the operation process.
The guide wire of the minimally invasive device extends out from the hose, and can extend and advance along with the bending of the blood vessel under the condition of not damaging the blood vessel through the characteristic of the hose, so that the guide wire can be rapidly moved to the diseased position.
The invention can rotate the catheter to turn the hose, so that the bending direction of the cut on the hose can correspond to the bending direction of the blood vessel, the position of the guide wire can be adjusted by rotating the catheter, and the position of the guide wire device can be finely adjusted, so that the positioning is accurate.
In the operation process, the hose is attached to the blood vessel, so that a certain fixing effect is achieved, and the influence on the guide wire caused by the influence of blood pressure and blood flow in the blood vessel is reduced.
Drawings
Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of the embodiments of the invention when taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic view of the combined structure of a minimally invasive introduction head for drug delivery according to the present invention.
FIG. 2 is a schematic view of the present invention taken apart from FIG. 1.
FIG. 3 is a schematic view showing a bent structure of the hose of the present invention.
Fig. 4 is a schematic view of the structure of the cannula and catheter of the present invention inserted into a blood vessel.
Fig. 5 is a schematic view of the catheter and guidewire of the present invention inserted into a blood vessel.
Fig. 6 is a side view of the cannula and catheter of the present invention.
Fig. 7 is a schematic view of the hose structure of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1-7, the present invention provides a minimally invasive introducer head for drug delivery: the structure of the device comprises an intubation tube 1 and a conduit 2, wherein the intubation tube 1 and the conduit 2 are both hollow, the intubation tube 1 is inserted into the conduit 2, the intubation tube 1 consists of a needle cylinder 11, a needle cylinder limiting ring 12, a needle cylinder taper tube 13 and a needle tube 14, the needle cylinder limiting ring 12 is positioned at the tail part of the needle cylinder 11, the needle cylinder limiting ring 12 and the needle cylinder taper tube 13 are of an integrated structure, a hollow cylindrical buffer tube is arranged between the needle cylinder limiting ring 12 and the needle cylinder taper tube 13, the needle cylinder taper tube 13 is of a circular truncated cone shape, the needle tube 14 is positioned at the axis of the needle cylinder taper tube 13, the conduit 2 consists of a conduit limiting ring 21, a conduit taper tube 22, a communicating tube 23 and a hose 24, a hollow cylindrical clamping tube is arranged between the conduit limiting ring 21 and the conduit taper tube 22, the inner wall of the clamping tube is provided with a longitudinal raised pattern corresponding to the clamping tube, the clamping tube is clamped, the, the hose 24 falls off, the communicating pipe 23 is fixedly connected with the hose 24, the needle tube 14 penetrates through the communicating pipe 23 and the hose 24, and the needle opening of the needle tube 14 is positioned at the outer end of the hose 24.
Preferably, the diameter of the syringe limiting ring 12 is larger than that of the syringe 11, the diameter of the catheter limiting ring 21 is larger than that of the catheter taper tube 22, the inclination of the catheter taper tube 22 is the same as that of the syringe taper tube 13, and the gap between the cannula 1 and the catheter 2 is reduced to avoid blood infiltration after the needle tube 14 is inserted.
Preferably, the hose 24 is hollow and cylindrical and has a plurality of slits for bending the hose 24, the hose 24 may be opened at one or more positions with the slits being reversed for bending the hose 24 in multiple sections, and the hose 24 may be made of flexible polyvinyl chloride, polyurethane elastomer, polyamide such as polyamide elastomer and polyester elastomer, and the like.
Preferably, the needle cannula 14 is used to insert the tube 24 into the blood vessel a.
Preferably, the cannula 1 can be extracted from the catheter 2 and inserted into a guide wire 3 for introducing a minimally invasive instrument, the guide wire 3 being intended to extend inside the blood vessel a.
Preferably, the rotating cannula 1 is used to rotate the flexible tube 24 in the blood vessel a.
Preferably, a medical cotton pad is adhered to the bottom of the communicating tube 23 and used for blocking an open wound.
Preferably, the catheter cone 22 and the syringe cone 13 are made of hard resin or metal.
The working principle is as follows: an operator inserts the cannula 1 into the catheter 2, meanwhile, a needle opening of the needle tube 14 needs to be exposed out of the hose 24, and after insertion, a buffer tube of the cannula 1 is matched with a tube clamping pattern of the catheter 2, so that the cannula 1 and the catheter 2 are fixed in position and cannot rotate, referring to fig. 4, a part of the needle tube 14 and the hose 24 are inserted into the blood vessel A, referring to fig. 5, the cannula 1 is slowly drawn out and simultaneously pushed into the catheter 2 forwards, so that the needle tube 14 is drawn out of the blood vessel A, the hose 24 is left in the blood vessel A and is rapidly connected with the guide wire 3 of the minimally invasive instrument, the hose 24 is easily bent through a plurality of openings in the hose 24 to adapt to the bent path of the blood vessel A, the hose 24 drives the guide wire 3 of the minimally invasive instrument to adjust the position by rotating the catheter 2, and meanwhile, a medical cotton pad of the communication pipe.
The specific embodiments described herein are merely illustrative of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims appended hereto.

Claims (7)

1. A minimally invasive introducer head for drug delivery, comprising: the structure of the needle tube comprises an insertion tube (1) and a catheter (2), wherein the insertion tube (1) and the catheter (2) are both hollow, the insertion tube (1) is inserted into the catheter (2), the insertion tube (1) consists of a needle cylinder (11), a needle cylinder limiting ring (12), a needle cylinder conical tube (13) and a needle tube (14), the needle cylinder limiting ring (12) is positioned at the tail part of the needle cylinder (11), the needle cylinder limiting ring (12) and the needle cylinder conical tube (13) are of an integrated structure and are provided with a hollow cylindrical buffer tube, longitudinal groove patterns are arranged on the buffer tube, the needle cylinder conical tube (13) is in a circular truncated cone shape, the needle tube (14) is positioned at the axis of the needle cylinder conical tube (13), the catheter (2) consists of a catheter limiting ring (21), a catheter conical tube (22), a communicating tube (23) and a hose (24), and a hollow cylindrical clamping tube is arranged between the catheter limiting ring (21) and the catheter conical tube (, the inner wall of the clamping tube is provided with longitudinal raised patterns corresponding to the buffer tube, the communicating tube (23) is fixedly connected with the hose (24), the needle tube (14) penetrates through the communicating tube (23) and the hose (24), and the needle opening of the needle tube (14) is positioned at the outer end of the hose (24).
2. The minimally invasive introducer head for drug delivery according to claim 1, wherein: the diameter of the needle cylinder limiting ring (12) is larger than that of the needle cylinder (11), the diameter of the catheter limiting ring (21) is larger than that of the catheter taper tube (22), and the inclination of the catheter taper tube (22) is the same as that of the needle cylinder taper tube (13).
3. The minimally invasive introducer head for drug delivery according to claim 1, wherein: the hose (24) is hollow and cylindrical and has a plurality of notches for bending the hose (24).
4. The minimally invasive introducer head for drug delivery according to claim 1, wherein: the needle tube (14) is used for inserting into a blood vessel (A) and enabling the hose (24) to enter into the blood vessel (A).
5. The minimally invasive introducer head for drug delivery according to claim 4, wherein: the intubation tube (1) can be pulled out from the catheter (2) and inserted into a guide wire (3) for introducing a minimally invasive instrument, and the guide wire (3) extends into the blood vessel (A).
6. The minimally invasive introducer head for drug delivery according to claim 5, wherein: rotating the cannula (1) serves to rotate the flexible tube (24) in the blood vessel (A).
7. The minimally invasive introducer head for drug delivery according to claim 5, wherein: the bottom of the communicating pipe (23) is stuck with a medical cotton pad.
CN202010597723.XA 2020-06-28 2020-06-28 Minimally invasive lead-in head for drug delivery Pending CN111617367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010597723.XA CN111617367A (en) 2020-06-28 2020-06-28 Minimally invasive lead-in head for drug delivery

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Application Number Priority Date Filing Date Title
CN202010597723.XA CN111617367A (en) 2020-06-28 2020-06-28 Minimally invasive lead-in head for drug delivery

Publications (1)

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CN111617367A true CN111617367A (en) 2020-09-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112843427A (en) * 2020-10-20 2021-05-28 中国人民解放军海军军医大学第一附属医院 Vascular sheath subassembly with adjustable camber

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202637704U (en) * 2012-04-10 2013-01-02 江苏日新医疗设备有限公司 Inside and outside tube telescopic cooperating structure in medical instruments
CN207532626U (en) * 2017-05-22 2018-06-26 刘少芹 A kind of novel hemodialysis puncture needle
WO2018164769A1 (en) * 2017-03-09 2018-09-13 Becton, Dickinson And Company Intravenous catheter assembly with cannula safety mechanism
CN108578878A (en) * 2018-05-07 2018-09-28 北京迈迪顶峰医疗科技有限公司 Vagina vasorum group and utilize its it is minimally invasive establish blood vessel intervention access method
CN210843155U (en) * 2019-08-27 2020-06-26 深圳北芯生命科技有限公司 Intravascular ultrasound catheter with incision

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202637704U (en) * 2012-04-10 2013-01-02 江苏日新医疗设备有限公司 Inside and outside tube telescopic cooperating structure in medical instruments
WO2018164769A1 (en) * 2017-03-09 2018-09-13 Becton, Dickinson And Company Intravenous catheter assembly with cannula safety mechanism
CN207532626U (en) * 2017-05-22 2018-06-26 刘少芹 A kind of novel hemodialysis puncture needle
CN108578878A (en) * 2018-05-07 2018-09-28 北京迈迪顶峰医疗科技有限公司 Vagina vasorum group and utilize its it is minimally invasive establish blood vessel intervention access method
CN210843155U (en) * 2019-08-27 2020-06-26 深圳北芯生命科技有限公司 Intravascular ultrasound catheter with incision

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112843427A (en) * 2020-10-20 2021-05-28 中国人民解放军海军军医大学第一附属医院 Vascular sheath subassembly with adjustable camber

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Application publication date: 20200904