CN202386749U - Pericardial puncture needle assembly - Google Patents
Pericardial puncture needle assembly Download PDFInfo
- Publication number
- CN202386749U CN202386749U CN2011201733730U CN201120173373U CN202386749U CN 202386749 U CN202386749 U CN 202386749U CN 2011201733730 U CN2011201733730 U CN 2011201733730U CN 201120173373 U CN201120173373 U CN 201120173373U CN 202386749 U CN202386749 U CN 202386749U
- Authority
- CN
- China
- Prior art keywords
- puncture needle
- bending
- seal wire
- needle
- paracentesis pericardii
- 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.)
- Expired - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3478—Endoscopic needles, e.g. for infusion
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- 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
- A61B2017/00238—Type of minimally invasive operation
- A61B2017/00243—Type of minimally invasive operation cardiac
- A61B2017/00247—Making holes in the wall of the heart, e.g. laser Myocardial revascularization
-
- 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
- A61B2017/003—Steerable
- A61B2017/00318—Steering mechanisms
- A61B2017/00331—Steering mechanisms with preformed bends
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
Abstract
The utility model discloses a pericardial puncture needle assembly comprising a pericardial puncture needle. A lead wire extends in the pericardial puncture needle and the lead wire comprises a far end and a near end, wherein the far end is in a fixed bent shape; the near end of the pericardial puncture needle is further fixedly provided with a connector; the fixed bent end is formed by bending the lead wire and the bent shape is of a structure which is suitable for bending an unfolding structure into a pre-set bent shape; the tail end is in a sharp structure and is made of a shape memory material; and the radius of curvature of the fixed bent end gradually becomes large or becomes large in a step manner from a sharp head end, and is the smallest at the sharp head end. The pericardial puncture needle assembly disclosed by the utility model does not cause damages to a heart when a pericardium is punctured.
Description
Technical field
The present invention relates to a kind of puncture needle assembly, relate to a kind of paracentesis pericardii needle assembly concretely.
Background technology
Pericardium is one deck connective tissue membrane structure that the heart periphery tightly is wrapped in.Outside carrying out the heart in the ablative surgery, must artificial handle be close to the pericardium of heart outer wall and make a call to a path, so that getting between heart outer wall and the pericardium through this path, ablation apparatus melts.
Present existing paracentesis pericardii device, shaped is various, discloses a kind of noinvasive paracentesis pericardii pin like Chinese patent CN00257117.X, comprises trocar sheath, nook closing member and end sealing cap composition; Described trocar sheath is the flexible sleeve pipe that has that is enclosed within the nook closing member outside of interior sky, and nook closing member is solid puncture needle, is fixed in the end of trocar sheath through the end sealing cap.After nook closing member thrusts pericardium, nook closing member is withdrawed from, trocar sheath continues to be fed into pericardial cavity, extracts pericardial effusion or injects medicine.
But mostly existing puncture needle is the staight needle structure, when clinical manipulation, often causes puncture failure because of inserting needle is not in place, also crosses because of inserting needle sometimes and stabs cardiac muscle deeply.
Summary of the invention
The present invention provides a kind of paracentesis pericardii needle assembly, comprises puncture needle, and seal wire extends in described puncture needle; Said seal wire comprises far-end and near-end, and its far-end is the fixed bend head end; Near-end at puncture needle also is fixed with joint; Said fixed bend head end is made up of said seal wire bending, and its bending is the structure that is suitable for bending to from deployed configuration predetermined bending, and end is a sharp structure, is processed by shape-memory material;
The radius of curvature of said fixed bend head end from pointed head end begin to be gradually become big or the change of ladder property big, minimum at pointed head end place.
Bending type of the being involute shape or the irregular bending of said fixed bend head end.
In a specific embodiments of the present invention, bending type of the being involute shape of said fixed bend head end comprises first bending section, second bending section and the 3rd bending section.
The radius of curvature of said first bending section is not more than 2mm, and the radius of curvature of said second bending section is not more than 1.5mm, and the radius of curvature of the 3rd bending section is not more than 1mm.
The seal wire of said fixed bend head portion is a cylindrical structural, and its diameter is 0.2-0.5mm.
The seal wire of said fixed bend head portion is flat type structure, and its width is preferably 0.2-0.5mm.
Said puncture needle is no needle point structure.
Said puncture needle is connected and composed by two sections pipes, and said distal tube is processed by nickel-titanium alloy material, and said proximal tube is processed by stainless steel material.
The diameter of said puncture needle far-end is less than the diameter of its near-end.
The internal diameter of said puncture needle proximal part is 0.5-1.1mm, and the internal diameter of distal portions is 0.2-0.6mm.
When said puncture needle was connected and composed by two sections pipes, the length of said distal tube was preferably 40-100mm, the preferred 60-120mm of the length of said proximal tube.
The far-end of said seal wire extends upward at the inner shaft of said puncture needle, and the near-end of said seal wire is free end or is fixed on the said joint.
In a preferred implementation of this utility model, described paracentesis pericardii needle assembly when pericardium is punctured, can not cause damage to heart.
Description of drawings
Fig. 1 is the perspective view according to the paracentesis pericardii needle assembly of a kind of specific embodiment of this utility model;
Shown in Figure 2 is the planar structure sketch map according to the paracentesis pericardii needle assembly of this utility model preferred embodiment;
Shown in Figure 3 is the cutaway view along B-B line shown in Figure 2, shows the internal structure of the paracentesis pericardii needle assembly of this utility model preferred embodiment;
Shown in Figure 4 is the cutaway view along A-A line shown in Figure 2, shows the cross-sectional structure of the paracentesis pericardii needle assembly of this utility model preferred embodiment;
Shown in Figure 5 is the enlarged drawing at C place among Fig. 1, shows the head end structure of the paracentesis pericardii needle assembly of this utility model preferred embodiment.
The specific embodiment
Pass through embodiment below, and combine accompanying drawing, the technical scheme of this utility model is done further detailed explanation, but this utility model is not limited only to following embodiment.
Shown in Figure 1 is the stereochemical structure signal of a kind of preferred paracentesis pericardii needle assembly 10 of this utility model
Figure comprises puncture needle 12, and seal wire 13 extends in described puncture needle 12.Said seal wire is elongated, flexible flexible structure, and it comprises far-end and near-end.The far-end of said seal wire 13 is fixing bending, and its end is a sharp structure.Near-end at puncture needle 13 also is fixed with joint 11.
Shown in Figure 2 is the planar structure sketch map according to the paracentesis pericardii needle assembly of this utility model; Shown in Figure 3 is according to the paracentesis pericardii pin 10 of the preferred embodiment of this utility model cutaway view along B-B line shown in Figure 2, the annexation between expression joint 11, puncture needle 12 and the seal wire 13, and shown in Figure 4 is the cutaway view along A-A line shown in Figure 2.Said puncture needle 12 is a tubular structure, and it comprises far-end and near-end, and it can be processed by any suitable biocompatible materials for use, like stainless steel material or nickel-titanium alloy material.The far-end of said puncture needle 12 is no needle point structure, and preferably fillet structure prevents that it from puncturing heart.
Said puncture needle 12 can be one-body molded by one section pipe, also can be that two sections pipes connect and compose.Preferably, said puncture needle 12 is connected and composed by two sections pipes, comprises distal tube 21 and proximal tube 22, and is as shown in Figure 3.The method of attachment of said distal tube 21 and proximal tube 22 does, the end of said distal tube 21 is inserted in the said proximal tube 22, fixes through bonding or welding.Said distal tube 21 can be processed by identical materials with proximal tube 22, also can be made from a variety of materials.Preferably, said distal tube 21 is processed by nickel-titanium alloy material, and said proximal tube 22 is processed by stainless steel material, can guarantee said puncture needle 12 certain flexibility in vivo like this.
The diameter of said puncture needle 12, those skilled in the art can set according to actual needs.Said puncture needle 12 can be the tubular structure of diameter homogeneous, also can be that far-end has different diameters with near-end.Preferably, the diameter of said puncture needle 12 far-ends is less than the diameter of its near-end, because the near-end of said puncture needle 12 need provide certain support force, and the far-end of said puncture needle 12 needs certain pliability, is used for realizing crooked.In a specific embodiments, the internal diameter of said puncture needle 12 proximal parts is 0.5-1.1mm, and the internal diameter of distal portions is 0.2-0.6mm.
The length of said puncture needle 12, those skilled in the art also can set according to actual needs.In a specific embodiments, when said puncture needle 12 was connected and composed by distal tube 21 and proximal tube 22, the length of said distal tube 21 was preferably 40-100mm, the preferred 60-120mm of the length of said proximal tube 22; The length of the coupling part between said distal tube 21 and the said proximal tube 22, those skilled in the art can set according to actual needs.
As shown in Figure 5 is the enlarged drawing at C place among Fig. 1, the structure of seal wire 13 head ends of the paracentesis pericardii assembly of expression this utility model preferred embodiment.Like Fig. 3 and shown in Figure 5, said seal wire 13 is elongated, bendable
Bent flexible structure, it can be processed by any suitable highly elastic material with shape memory function, is preferably nickel-titanium alloy material.Said seal wire 13 is preferably solid construction, and its inside does not have cavity.
Like Fig. 3 and shown in Figure 5, said seal wire 13 comprises far-end and near-end, and the far-end of said seal wire 13 is a fixed bend head end 32.The structure of said fixed bend head end 32 is the structures that are suitable for bending to from deployed configuration predetermined bending, and the end of said fixed bend head end 32 is a sharp structure, can be used for pericardium is punctured, and can not cause any damage.Said fixed bend head end 32 is made up of said seal wire 13 bendings, because nickel-titanium alloy material has shape memory function, makes said fixed bend head end 32 when launching with bending, can return to reservation shape.The bending of said fixed bend head end 32 can type of being involute shape, also can be other irregular bendings that are fit to, its radius of curvature from pointed head end begin to be become big gradually or the change of ladder property big, minimum at pointed head end place.After the tip of described fixed bend head end 32 punctures pericardium, said tip towards opposite with the direction of propulsion of said seal wire, therefore can not puncture heart; Even along with said fixed bend head end 32 progresses into pericardium, most advanced and sophisticated towards identical with the direction of propulsion of seal wire, this moment, the power on the seal wire can't be delivered to the tip, therefore, also can not cause damage to heart because seal wire is very long and soft.
As shown in Figure 5, in this embodiment, bending type of the being involute shape of said fixed bend head end 32, said fixed bend head end 32 comprises first bending section, 321, the second bending sections 322 and the 3rd bending section 323.Between said first bending section 321 and second bending section 322, and the seal wire between second bending section 322 and the 3rd bending section 323, be preferably on the direction parallel and extend with said puncture needle 12.Class involute shape described in this utility model and irregular bending are meant that radius of curvature becomes big or the big full curve of ladder property change gradually.For example, in a specific embodiments, between said first bending section 321 and second bending section 322 or be one section straight line between second bending section 322 and the 3rd bending section 323; In another embodiment, also can be successive circular arc between 322 or second bending section 322 and the 3rd bending section 323 between said first bending section 321 and second bending section; But its radius of curvature from pointed head end begin to be gradually become big or the change of ladder property big, minimum at pointed head end place.
In the preferred embodiment of this utility model; Said first bending section 321; The radius of curvature of second bending section 322 and the 3rd bending section 323, those skilled in the art can set according to actual needs, and the radius of curvature of said first bending section 321 is not more than 2mm; The radius of curvature of said second bending section 322 is not more than 1.5mm, and the radius of curvature of the 3rd bending section 323 is not more than 1mm.
The seal wire 13 of said fixed bend head end 32 parts can be a cylindrical structural, and its diameter can be set by those skilled in the art according to actual needs, in the preferred embodiment of this utility model, is preferably 0.2-0.5mm.The seal wire 13 of said fixed bend head end 32 parts also can be flat type structure, and is as shown in Figure 5,
Its width is preferably 0.2-0.5mm.
Like Fig. 1, Fig. 2 or shown in Figure 3, the far-end of said seal wire 13 extends upward at the inner shaft of said puncture needle 12, and the near-end of said seal wire 13 according to those skilled in the art's needs, can be fixed on the said joint 11, can be free end also, does not fix.
Said joint 11 is fixed in the near-end of said puncture needle 12, and it is preferably female luer, after puncture is accomplished, after seal wire 13 extractions, can be used for input medicine or other liquid in body, also can be used in body, extracting hydrops.
According to this utility model one preferred embodiment, described paracentesis pericardii needle assembly in use, when said fixed bend head end 32 all was positioned at said puncture needle 12, said fixed bend head end 32 was a deployed configuration.When pushing said seal wire 13 forward, the end of said fixed bend head end 32 punctures pericardium, and said seal wire 13 progresses into pericardium inside; Said fixed bend head end 32 beginnings are slowly crooked; Revert to reservation shape to it, it is inner that puncture needle 12 gets into pericardium, and puncture is accomplished.Said seal wire 13 is extracted out external, in the extraction, seal wire 13 reverts to deployed condition from case of bending, be retracted in the said puncture needle 12, said seal wire 13 withdraw from external after, can be through said joint 11 injectable drug, contrast agent or extract hydrops in the body in body.
It is said that the embodiment of this utility model is not limited to the foregoing description; Under the situation of spirit that does not depart from this utility model and scope; Those of ordinary skills can make various changes and improvement to this utility model in form and details, and these all are considered to fall into the protection domain of this utility model.
Claims (12)
1. a paracentesis pericardii needle assembly is characterized in that comprising puncture needle, and seal wire extends in described puncture needle;
Said seal wire comprises far-end and near-end, and its far-end is the fixed bend head end; Near-end at puncture needle also is fixed with joint; Said fixed bend head end is made up of said seal wire bending, and its bending is the structure that is suitable for bending to from deployed configuration predetermined bending, and end is a sharp structure, is processed by shape-memory material; The radius of curvature of said fixed bend head end from pointed head end begin to be gradually become big or the change of ladder property big, minimum at pointed head end place.
2. paracentesis pericardii needle assembly according to claim 1 is characterized in that bending type of the being involute shape or the irregular bending of said fixed bend head end.
3. paracentesis pericardii needle assembly according to claim 2 is characterized in that bending type of the being involute shape of said fixed bend head end comprising first bending section, second bending section and the 3rd bending section.
4. paracentesis pericardii needle assembly according to claim 3 is characterized in that the radius of curvature of said first bending section is not more than 2mm, and the radius of curvature of said second bending section is not more than 1.5mm, and the radius of curvature of the 3rd bending section is not more than 1mm.
5. according to claim 1 or 2 or 3 or 4 described paracentesis pericardii needle assemblys, the seal wire that it is characterized in that said fixed bend head portion is a cylindrical structural, and its diameter is 0.2-0.5mm.
6. according to claim 1 or 2 or 3 or 4 described paracentesis pericardii needle assemblys, the seal wire that it is characterized in that said fixed bend head portion is flat type structure, and its width is 0.2-0.5mm.
7. according to claim 1 or 2 or 3 or 4 described paracentesis pericardii needle assemblys, it is characterized in that said puncture needle is no needle point structure.
8. according to claim 1 or 2 or 3 or 4 described paracentesis pericardii needle assemblys, it is characterized in that said puncture needle is connected and composed by two sections pipes, said distal tube is processed by nickel-titanium alloy material, and said proximal tube is processed by stainless steel material.
9. paracentesis pericardii needle assembly according to claim 8, the length that it is characterized in that said distal tube is 40-100mm, the length 60-120mm of said proximal tube.
10. paracentesis pericardii needle assembly according to claim 8 is characterized in that the diameter of the diameter of said puncture needle far-end less than its near-end.
11. paracentesis pericardii needle assembly according to claim 10, the internal diameter that it is characterized in that said puncture needle proximal part is 0.5-1.1mm, and the internal diameter of distal portions is 0.2-0.6mm.
12. according to claim 1 or 2 or 3 or 4 described paracentesis pericardii needle assemblys, it is characterized in that the far-end of said seal wire extends upward at the inner shaft of said puncture needle, the near-end of said seal wire is free end or is fixed on the said joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201733730U CN202386749U (en) | 2011-05-27 | 2011-05-27 | Pericardial puncture needle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201733730U CN202386749U (en) | 2011-05-27 | 2011-05-27 | Pericardial puncture needle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202386749U true CN202386749U (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201733730U Expired - Lifetime CN202386749U (en) | 2011-05-27 | 2011-05-27 | Pericardial puncture needle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202386749U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102793577A (en) * | 2011-05-27 | 2012-11-28 | 心诺普医疗技术（北京）有限公司 | Pericardium puncture needle assembly |
| CN104546074A (en) * | 2013-10-24 | 2015-04-29 | 心诺普医疗技术（北京）有限公司 | Pericardium puncture needle component |
| CN109009355A (en) * | 2012-12-28 | 2018-12-18 | 心诺普医疗技术（北京）有限公司 | A kind of paracentesis pericardii needle assemblies |
| CN112774001A (en) * | 2021-01-27 | 2021-05-11 | 康迪泰科(北京)医疗科技有限公司 | Medical catheter and method of using medical catheter |
-
2011
- 2011-05-27 CN CN2011201733730U patent/CN202386749U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102793577A (en) * | 2011-05-27 | 2012-11-28 | 心诺普医疗技术（北京）有限公司 | Pericardium puncture needle assembly |
| CN109009355A (en) * | 2012-12-28 | 2018-12-18 | 心诺普医疗技术（北京）有限公司 | A kind of paracentesis pericardii needle assemblies |
| CN104546074A (en) * | 2013-10-24 | 2015-04-29 | 心诺普医疗技术（北京）有限公司 | Pericardium puncture needle component |
| CN112774001A (en) * | 2021-01-27 | 2021-05-11 | 康迪泰科(北京)医疗科技有限公司 | Medical catheter and method of using medical catheter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 101111 Beijing City Economic and Technological Development Zone Branch Street No. 100 block C Patentee after: Synpatic Medical Technology (Beijing) Co., Ltd. Address before: 100085, 1 floor, building 1, No. four, 3 Street, Beijing, Haidian District Patentee before: Synpatic Medical Technology (Beijing) Co., Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Pericardium puncture needle assembly Effective date of registration: 20170703 Granted publication date: 20120822 Pledgee: Pudong Development Silicon Valley Bank Co., Ltd. Beijing branch Pledgor: Synpatic Medical Technology (Beijing) Co., Ltd. Registration number: 2017990000564 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200515 Granted publication date: 20120822 Pledgee: Pudong Development Silicon Valley Bank Co., Ltd. Beijing branch Pledgor: SYNAPTIC MEDICAL (BEIJING) Co.,Ltd. Registration number: 2017990000564 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |