CN109431591B - Novel bone filler conveying system - Google Patents
Novel bone filler conveying system Download PDFInfo
- Publication number
- CN109431591B CN109431591B CN201811577601.3A CN201811577601A CN109431591B CN 109431591 B CN109431591 B CN 109431591B CN 201811577601 A CN201811577601 A CN 201811577601A CN 109431591 B CN109431591 B CN 109431591B
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- Prior art keywords
- sleeve
- handle
- conveying pipe
- delivery tube
- working
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 23
- 239000000945 filler Substances 0.000 title claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 40
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 description 12
- 238000005452 bending Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8802—Equipment for handling bone cement or other fluid fillers
- A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
- A61B17/8816—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by the conduit, e.g. tube, along which fluid flows into the body or by conduit connections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/28—Bones
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/28—Bones
- A61F2002/2835—Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Surgery (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Vascular Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a novel bone filler conveying system, which comprises a working channel and a conveying component; wherein the working channel comprises a working sleeve and a sleeve handle; the conveying assembly comprises a conveying pipe, a conveying pipe handle and a jacket mechanism; wherein, the outer sleeve mechanism is a rigid structure and is sleeved on the conveying pipe in a sliding way; and when the sheath mechanism is disposed at the distal end portion of the delivery tube, the deformable section of the delivery tube is in a flattened configuration; when the jacket mechanism is disposed at the proximal end of the delivery tube, the deformable section of the delivery tube is in a curved configuration; in addition, the tail end of the jacket mechanism can be assembled with the sleeve handle in a detachable mode; the delivery tube can be inserted into the working cannula through the cannula handle and the deformable section of the delivery tube can extend from the end of the working cannula. The invention can be applied to minimally invasive operations such as percutaneous vertebroplasty and the like, and can lead doctors to smoothly send the bent part of the conveying pipe into the vertebral body, and quickly and conveniently withdraw the conveying component after the bone filler is injected.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a novel bone filler conveying system which can be applied to minimally invasive operations such as percutaneous vertebroplasty and the like.
Background
Percutaneous Vertebroplasty (PVP) refers to a minimally invasive spinal surgery for the purpose of increasing the strength and stability of the vertebral body, preventing collapse, relieving pain, and even partially restoring the vertebral body height by percutaneous injection of bone filler into the vertebral body through the pedicle or extrapedicular.
Products with bending sections at the distal end are present in vertebroplasty surgical instruments used in vertebroplasty (PVP or PKP), so that the number of punctures can be reduced, and the pain of patients can be relieved. For example, patent application 200880011416.6 discloses a percutaneous transluminal surgical instrument wherein the instrument is described with a curved section at the distal end.
However, although the distal end of the above-mentioned patent product is a bending section with shape memory property, there are a plurality of problems in the operation process, for example, the bending section of the shape memory alloy has excessive force in the process of entering the working cannula, and the puncture needle is easy to shift; and the force during the withdrawal of the bent syringe from the working cannula is excessive and is not effective for the physician.
Disclosure of Invention
In view of the above problems in the prior art, the present invention provides a novel bone filler delivery system that allows a physician to smoothly deliver the curved portion of the delivery tube into the vertebral body and to quickly and conveniently withdraw the bone filler after injection. The novel bone filler delivery system comprises a working channel and a delivery assembly; wherein,
the working channel comprises a working sleeve and a sleeve handle; the working sleeve is of a structure with two open ends, and one end of the working sleeve is fixedly connected with the sleeve handle;
the conveying assembly comprises a conveying pipe, a conveying pipe handle and a jacket mechanism; wherein the delivery tube comprises an open proximal end, a deformable section opposite the open proximal end, the deformable section terminating in a closed distal end of the delivery tube, forming a longitudinally extending curved shape having shape memory properties such that the deformable section of the delivery tube assumes a longitudinally straight shape when subjected to a force and naturally returns to the curved shape when the force is removed;
in addition, the delivery tube further comprises a lumen extending from the open proximal end to the closed distal end; at least one injection hole is formed in the side wall of the conveying pipe at a position adjacent to the closed distal end part, and the injection hole is communicated with the inner cavity; the conveying pipe handle is fixedly connected with the opening proximal end part of the conveying pipe, an injection channel is arranged in the conveying pipe handle, and the injection channel of the conveying pipe handle is communicated with the inner cavity of the conveying pipe;
the outer sleeve mechanism is of a rigid structure and is slidably sleeved on the conveying pipe; and said deformable section is in said flat configuration when said sheath mechanism is disposed at the distal end of said delivery tube; when the sheath mechanism is disposed at the proximal end of the delivery tube, the deformable section is in the curved configuration;
in addition, the tail end of the jacket mechanism can be assembled with the sleeve handle in a detachable mode; the delivery tube is insertable into the working cannula through the cannula handle and the deformable section of the delivery tube is extendable from the working cannula end.
Further, the proximal end of the delivery tube is a rigid segment and the distal end of the delivery tube is made of a shape memory alloy.
Optionally, the jacket mechanism and the cannula handle are assembled together in a clamping manner.
Further, the jacket mechanism comprises a knob and a sleeve; wherein the knob has internal threads and the sleeve has external threads that match the internal threads of the knob; the sleeve can be sleeved on the conveying pipe; the sleeve may be threaded into or out of the knob when the knob is rotated.
Preferably, the novel bone filler delivery system further comprises a bushing core assembly; the lining core assembly comprises a lining core handle and a lining core; the distal end of the lining core is a flexible section, the proximal end of the lining core is fixedly connected with the lining core handle, and when the lining core assembly is installed on the conveying pipe handle, the lining core blocks the injection hole of the conveying pipe.
Compared with the prior art, the invention has the following advantages and advances:
1. the distal end of the bone filler delivery system of the present invention is provided with a sheath mechanism that initially coats the deformable curved section of the distal end of the delivery tube; before use, the outer sleeve mechanism is only arranged on the sleeve handle, and then the conveying pipe handle is directly pushed to rapidly convey the conveying pipe into the working sleeve, so that the operation of a doctor is simple and convenient, and the risk of displacement of the working sleeve when the bending section of the conveying pipe is directly jacked into the working sleeve due to external force is avoided;
2. the outer sleeve mechanism adopts the screw threads to control the height, so that when the bending section of the conveying pipe extends out of the tail end of the working sleeve, the extending length of the bending section can be effectively controlled, and the situation that a doctor cannot control the strength and the side wall of the vertebral body is broken due to overlarge strength and overlarge speed in the extending process of the bending section is avoided;
3. the knob of the outer sleeve mechanism is rotated, so that the process that the conveying assembly is pulled out of the vertebral body can be effectively and quickly controlled, and the situation that the working sleeve is simultaneously taken out of the vertebral body due to overlarge force is avoided.
Drawings
FIG. 1 is a schematic view of a delivery assembly of a novel bone filler delivery system according to an embodiment of the present invention prior to insertion into a working channel;
FIG. 2 is a schematic view of a delivery assembly of the novel bone filler delivery system according to an embodiment of the present invention after insertion into a working channel;
FIG. 3 is a schematic diagram of a conveying assembly according to an embodiment of the present invention;
FIG. 4 is a schematic view of a conveying assembly with a jacket removing mechanism according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of an outer jacket mechanism according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a working channel according to an embodiment of the present invention;
fig. 7 and 8 are schematic structural diagrams of a core assembly according to an embodiment of the present invention.
Reference numerals illustrate:
1: conveying assembly, 2: overcoat mechanism, 3: working channel, 4: core assembly, 11: the conveying pipe is provided with a plurality of conveying pipes,
12: delivery tube handle, 13: injection hole, 21: knob, 22: sleeve, 31: a sleeve handle, a sleeve handle and a sleeve handle,
32: working cannula, 41: core handle, 42: and a lining core.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 8, the present embodiment provides a novel bone filler delivery system, which enables a doctor to smoothly deliver the curved portion of a delivery tube into a vertebral body, and to quickly and conveniently withdraw the bone filler after injection. The novel bone filler delivery system comprises a working channel 3 and a delivery assembly 1, as shown in fig. 1 and 2; wherein the working channel 3 comprises a working cannula 32 and a cannula handle 31; wherein, the working sleeve 32 has an open structure at both ends, and one end thereof is fixedly connected (welded or bonded) with the sleeve handle 31, as shown in fig. 6;
the delivery assembly 1 comprises a delivery tube 11, a delivery tube handle 12 and a jacket mechanism 2, as shown in fig. 3; wherein the delivery tube 11 comprises an open proximal end, opposite to the open proximal end, a deformable section ending in a closed distal end of the delivery tube 11, forming a longitudinally extending curved shape, as shown in fig. 4; the deformable section has shape memory properties, so that the deformable section can take a straight shape in the longitudinal direction when stressed and can naturally recover to the curved shape when the force is removed;
furthermore, the delivery tube 11 comprises a lumen extending from the open proximal end to the closed distal end; and the side wall of the conveying pipe 11 is provided with at least one injection hole 13 at a position adjacent to the closed distal end part, and the injection hole 13 is communicated with the inner cavity; the conveying pipe handle 12 is fixedly connected with the opening proximal end part of the conveying pipe 11, an injection channel is arranged in the conveying pipe handle 12, and the injection channel of the conveying pipe handle 12 is communicated with the inner cavity of the conveying pipe 11;
the outer sleeve mechanism 2 is of a rigid structure and is slidably sleeved on the conveying pipe 11; and said deformable section is in said flat configuration when said sheath means 2 is placed on the distal end of said delivery tube 11; when the sheath mechanism 2 is placed on the proximal end of the delivery tube 11, the deformable section is in the curved configuration;
furthermore, the end of the sheath mechanism 2 may be detachably assembled with the sheath handle 31, as shown in fig. 2; the delivery tube 11 can be inserted into the working cannula 32 through the cannula handle 31 and the deformable section of the delivery tube 11 can extend from the end of the working cannula 32.
Further, the proximal end of the delivery tube 11 is a rigid section, and the distal end is made of a shape memory alloy. The jacket mechanism 2 and the sleeve handle 31 are assembled together in a clamping manner. The jacket mechanism 2 comprises a knob 21 and a sleeve 22, as shown in fig. 5; wherein the knob 21 has an internal thread and the sleeve 22 has an external thread matching the internal thread of the knob 21; the sleeve 22 can be sleeved on the conveying pipe 11; when the knob 21 is rotated, the sleeve 22 can be screwed in or out of the knob 21.
Preferably, the novel bone filler delivery system of the present embodiment further comprises a bushing core assembly 4; the core assembly 4 comprises a core handle 41 and a core 42, as shown in fig. 7 and 8; the distal end of the core 42 is a flexible section, the proximal end of the core 42 is fixedly connected with the core handle 41, and when the core assembly 4 is mounted on the delivery tube handle 12, the core 42 blocks the injection hole 13 on the delivery tube 11.
Before use, the lining core assembly 4 is removed, and the outer sleeve mechanism 2 is installed on the deformable section of the conveying pipe 11 of the conveying assembly 1; when the delivery assembly 1 is entering the working channel 3, the sheath mechanism 2 will be stuck at the cannula handle 31 and the delivery tube 11 will continue into the working cannula 32 of the working channel 3. When retraction is required, the knob 21 of the sheath mechanism 2 is rotated and the sleeve 22 of the sheath mechanism 2 will eject the delivery assembly 1 out of the working channel 3.
Compared with the prior art, the bone filler delivery system of the embodiment has the following advantages and improvements:
1. the distal end of the bone filler delivery system of the present invention is provided with a sheath mechanism that initially coats the deformable curved section of the distal end of the delivery tube; before use, the outer sleeve mechanism is only arranged on the sleeve handle, and then the conveying pipe handle is directly pushed to rapidly convey the conveying pipe into the working sleeve, so that the operation of a doctor is simple and convenient, and the risk of displacement of the working sleeve when the bending section of the conveying pipe is directly jacked into the working sleeve due to external force is avoided;
2. the outer sleeve mechanism adopts the screw threads to control the height, so that when the bending section of the conveying pipe extends out of the tail end of the working sleeve, the extending length of the bending section can be effectively controlled, and the situation that a doctor cannot control the strength and the side wall of the vertebral body is broken due to overlarge strength and overlarge speed in the extending process of the bending section is avoided;
3. the knob of the outer sleeve mechanism is rotated, so that the process that the conveying assembly is pulled out of the vertebral body can be effectively and quickly controlled, and the situation that the working sleeve is simultaneously taken out of the vertebral body due to overlarge force is avoided.
Furthermore, it should be noted that, in the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal device. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or terminal device comprising the element.
The above is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A novel bone filler delivery system, wherein the novel bone filler delivery system comprises a working channel and a delivery assembly; wherein,
the working channel comprises a working sleeve and a sleeve handle; the working sleeve is of a structure with two open ends, and one end of the working sleeve is fixedly connected with the sleeve handle;
the conveying assembly comprises a conveying pipe, a conveying pipe handle and a jacket mechanism; wherein the delivery tube comprises an open proximal end, a deformable section opposite the open proximal end, the deformable section terminating in a closed distal end of the delivery tube, forming a longitudinally extending curved shape having shape memory properties such that the deformable section of the delivery tube assumes a longitudinally straight shape when subjected to a force and naturally returns to the curved shape when the force is removed;
in addition, the delivery tube further comprises a lumen extending from the open proximal end to the closed distal end; at least one injection hole is formed in the side wall of the conveying pipe at a position adjacent to the closed distal end part, and the injection hole is communicated with the inner cavity; the conveying pipe handle is fixedly connected with the opening proximal end part of the conveying pipe, an injection channel is arranged in the conveying pipe handle, and the injection channel of the conveying pipe handle is communicated with the inner cavity of the conveying pipe;
the outer sleeve mechanism is of a rigid structure and is slidably sleeved on the conveying pipe; and said deformable section is in said flat configuration when said sheath mechanism is disposed at the distal end of said delivery tube; when the sheath mechanism is disposed at the proximal end of the delivery tube, the deformable section is in the curved configuration;
in addition, the tail end of the jacket mechanism can be assembled with the sleeve handle in a detachable mode; the delivery tube is insertable into the working cannula through the cannula handle and the deformable section of the delivery tube is extendable from the working cannula end;
the jacket mechanism and the sleeve handle are assembled together in a clamping manner; the jacket mechanism comprises a knob and a sleeve; wherein the knob has internal threads and the sleeve has external threads that match the internal threads of the knob; the sleeve can be sleeved on the conveying pipe; the sleeve may be threaded into or out of the knob when the knob is rotated.
2. The novel bone filler delivery system of claim 1, wherein the proximal portion of the delivery tube is a rigid segment and the distal portion of the delivery tube is made of a shape memory alloy.
3. The novel bone filler delivery system of claim 1, further comprising a bushing assembly;
the lining core assembly comprises a lining core handle and a lining core; the distal end of the lining core is a flexible section, the proximal end of the lining core is fixedly connected with the lining core handle, and when the lining core assembly is installed on the conveying pipe handle, the lining core blocks the injection hole of the conveying pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577601.3A CN109431591B (en) | 2018-12-20 | 2018-12-20 | Novel bone filler conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577601.3A CN109431591B (en) | 2018-12-20 | 2018-12-20 | Novel bone filler conveying system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109431591A CN109431591A (en) | 2019-03-08 |
| CN109431591B true CN109431591B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811577601.3A Active CN109431591B (en) | 2018-12-20 | 2018-12-20 | Novel bone filler conveying system |
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| Country | Link |
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| CN (1) | CN109431591B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111544163A (en) * | 2019-12-19 | 2020-08-18 | 广州爱锘德医疗器械有限公司 | Filler syringe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143104A (en) * | 2013-03-04 | 2013-06-12 | 宁波华科润生物科技有限公司 | Bone filler conveying cannula with adjustable bending angle |
| CN103637842A (en) * | 2013-12-12 | 2014-03-19 | 宁波华科润生物科技有限公司 | Implantation system for bone implants |
| CN206333957U (en) * | 2016-08-29 | 2017-07-18 | 普霖医疗科技(广州)有限公司 | A kind of elbow bone cement pusher |
| CN107736930A (en) * | 2017-09-30 | 2018-02-27 | 谢安迪 | A kind of orthopedic instrument |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8246627B2 (en) * | 2008-08-07 | 2012-08-21 | Stryker Corporation | Cement delivery device for introducing cement into tissue, the device having a cavity creator |
| US20100298832A1 (en) * | 2009-05-20 | 2010-11-25 | Osseon Therapeutics, Inc. | Steerable curvable vertebroplasty drill |
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- 2018-12-20 CN CN201811577601.3A patent/CN109431591B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143104A (en) * | 2013-03-04 | 2013-06-12 | 宁波华科润生物科技有限公司 | Bone filler conveying cannula with adjustable bending angle |
| CN103637842A (en) * | 2013-12-12 | 2014-03-19 | 宁波华科润生物科技有限公司 | Implantation system for bone implants |
| CN206333957U (en) * | 2016-08-29 | 2017-07-18 | 普霖医疗科技(广州)有限公司 | A kind of elbow bone cement pusher |
| CN107736930A (en) * | 2017-09-30 | 2018-02-27 | 谢安迪 | A kind of orthopedic instrument |
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| CN109431591A (en) | 2019-03-08 |
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