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NL2035228B1 - Gun-type expander for a spinal minimally invasive surgery pathway - Google Patents

Gun-type expander for a spinal minimally invasive surgery pathway Download PDF

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Publication number
NL2035228B1
NL2035228B1 NL2035228A NL2035228A NL2035228B1 NL 2035228 B1 NL2035228 B1 NL 2035228B1 NL 2035228 A NL2035228 A NL 2035228A NL 2035228 A NL2035228 A NL 2035228A NL 2035228 B1 NL2035228 B1 NL 2035228B1
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Netherlands
Prior art keywords
rack
minimally invasive
gear
expansion
rotating shaft
Prior art date
Application number
NL2035228A
Other languages
Dutch (nl)
Inventor
Wang Zheng
Ji Xinran
Original Assignee
The Fourth Medical Center Of The Chinese Peoples Liberation Army General Hospital
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Publication of NL2035228B1 publication Critical patent/NL2035228B1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors
    • A61B17/025—Joint distractors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3472—Trocars; Puncturing needles for bones, e.g. intraosseus injections
    • 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
    • A61M29/00—Dilators with or without means for introducing media, e.g. remedies
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
    • A61B2017/00407—Ratchet means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Pathology (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Surgical Instruments (AREA)

Abstract

Disclosed is a gun-type expander for a spinal minimally invasive surgery pathway, and relates to the technical field of minimally invasive surgery. The technical solutions are as follows: the expander includes a housing, wherein a grab handle is disposed on a sidewall of the housing, a rotating chamber is formed in the housing, and a sliding groove communicated with the rotating chamber is formed in the housing; a rack is disposed in the sliding groove; a transmission mechanism for driving the rack to slide along the sliding groove is disposed in the rotating chamber; a pressing handle is disposed at the power input end of the transmission mechanism, and a spring connecting the pressing handle and the grab handle is disposed between the pressing handle and the grab handle; a hollow pull rod is disposed at an end of the rack.

Description

GUN-TYPE EXPANDER FOR A SPINAL MINIMALLY INVASIVE SURGERY PATHWAY
Technical Field
The present invention relates to the technical field of minimally invasive surgery, and in particular to a gun-type expander for a spinal minimally invasive surgery pathway.
Background Art
The orthopaedic minimally invasive surgery has become increasingly popular. The minimally invasive surgery is characterized by fast recovery and few complications and reduces the pain of patients, so it is also the trend of orthopaedic development in the future.
Conventional minimally invasive pathways are similar to the "Russian doll". First, a Kirschner wire is placed in the desired part under flucroscopy; and then, hollow sleeves with different diameters are gradually expanded until the desired size is achieved. However, due to the thickness of the sleeve wall itself, important tissues such as blood vessels and nerves nearby the Kirschner wire will be damaged during the gradual expansion.
To solve the above problem, there are many expanders in the prior part. For example,
Chinese Invention Patent CN106963429A disclosed a gasbag-type expander for a minimally invasive pathway. In the expander, the effect of expanding the surgery pathway is achieved by providing a gasbag in the outer sleeve, mounting a delivery pipe communicated with the gasbag inthe inner sleeve and inflating the gasbag by an external gas injection device so as to expand the outer sleeve. Although this structure can realize the expansion of the minimally invasive surgery pathway, it is complex to operate, and this effect can be realized only after the expander is connected to the matched gas injection device. Based on this technical problem, the inventor of the present application has invented a gun-type expander for a spinal minimally invasive surgery pathway.
Summary of the Invention
An objective of the present invention is to provide a gun-type expander for a spinal minimally invasive surgery pathway, which can complete the expansion of the minimally invasive surgery pathway by only pressing a pressing handle, and is easy to operate, thereby improving the operative efficiency of medical workers.
The objective of the present application is achieved by the following technical features. A gun-type expander for a spinal minimally invasive surgery pathway is provided, including a housing, characterized in that a grab handle is disposed on a sidewall of the housing, a rotating chamber is formed in the grab handle, and a sliding groove communicated with the rotating chamber is formed in the housing; a rack is disposed in the sliding groove. a transmission mechanism for driving the rack to slide along the sliding groove is disposed in the rotating chamber; a pressing handle is disposed at a power input end of the transmission mechanism,
and a spring connecting the pressing handle and the grab handle is disposed between the pressing handle and the grab handle; a hollow pull rod is disposed at an end of the rack; a plurality of grooves are formed at an end of the housing; limiting rods are disposed in the plurality of grooves; expansion plates are sleeved on the plurality of limiting rods, the expansion plates have arc-shaped sections, and the plurality of expansion plates are distributed at equal arc-length intervals with the hollow pull rod as the centre of circle; an expansion mechanism is disposed among the plurality of expansion plates; and the expansion mechanism is fixedly sleeved on an outer sidewall of the hollow pull rod.
With the above-mentioned technical solution, the pressing handle is connected to the transmission mechanism which is engaged with the rack, and the sidewall of the hollow pull rod is connected to the plurality of expansion plates through the expansion mechanism. Thus, when expanding a minimally invasive surgery pathway, a medical worker only needs to hold the grab handle and presses down the pressing handle to complete the expansion of the minimally invasive surgery pathway. The expander is simple to operate and convenient to carry. With the spring disposed between the pressing handle and the grab handle, after the pressing handle is released, the pressing handle and the expansion plates may return under the action of the spring. The operation is simple.
In the present invention, further, the expansion mechanism includes a driving block and a plurality of supporting rods. The plurality of supporting rods correspond to the plurality of expansion plates, respectively. One end of the supporting rod is hinged to a concave surface of the expansion plate, and the other end of the supporting rod is movably connected to a side edge of the driving block.
With the above-mentioned technical solution, the supporting rods are disposed between the driving block and the expansion plates, and two ends of the supporting rods are hinged. Thus, when the hollow pull rod is moved forwards, an effect of expanding the plurality of expansion plates outwards simultaneously can be achieved.
In the present invention, further, the transmission mechanism includes a first gear, a second gear, a first rotating shaft and a second rotating shaft. Two ends of the first rotating shaft and the second rotating shaft are rotatably connected to sidewalls of the rotating chamber.
The first gear and the pressing handle both fixedly sleeve the first rotating shaft. The second gear fixedly sleeves the second rotating shaft and is engaged with both of the first gear and the toothed surface of the rack.
With the above-mentioned technical solution, the pressing handle and the first gear both fixedly sleeve the first rotating shaft. Thus, when the pressing handle is pressed, a translation control on the rack may be realized through an engagement manner of the first gear, the second gear and the rack. The expansion plates may be expanded outwards by pressing the pressing handle.
In the present invention, further, a lug for limiting the rack is fixedly connected to a sidewall of the rack.
With the above-mentioned technical solution, the lug is fixedly connected to the sidewall of the rack and plays a role in limiting so that the rack can slide stably in the sliding groove, improving the stability of the expander.
To sum up, the present invention has the following beneficial effects: 1, the pressing handle is connected to the transmission mechanism which is engaged with the rack, and the sidewall of the hollow pull rod is connected to the plurality of expansion plates through the expansion mechanism. Thus, when expanding a minimally invasive surgery pathway, a medical worker only needs to hold the grab handle and presses down the pressing handle to complete the expansion of the minimally invasive surgery pathway. The expander is simple to operate and convenient to carry. 2. With the spring disposed between the pressing handle and the grab handle, after the pressing handle is released, the pressing handle and the expansion plates may return under the action of the spring. The operation is simple. 3, the supporting rods are disposed between the driving block and the expansion plates, and two ends of the supporting rods are hinged. Thus, when the hollow pull rod is moved forwards, the effect of expanding the plurality of expansion plates outwards simultaneously can be achieved.
Brief Description of the Drawings
FIG. 1 is a side sectional view of a gun-shaped expander for a minimally invasive spine surgery pathway in an embodiment of the present invention;
FIG. 2 is an enlarged view of area A in FIG. 1; and
FIG. 3 is a cross-sectional view of area A-A in FIG. 1.
List of Reference Numerals: 1-housing;2-rack;3-hollow pull rod;4-groove;5-expansion plate;6-limiting rod; 7-first gear; 8-pressing handle; 9-grab handle; 10-spring;11-first rotating shaft; 12-rotating chamber; 13-second gear; 14-sliding groove; 15-second rotating shaft; 16-lug;17- driving block; and 18-supporting rod.
Detailed Description of the Invention
The present invention is further described below with reference to FIG. 1 to FIG. 3.
Embodiment: a gun-shaped expander for a minimally invasive spine surgery pathway, as shown in FIG. 1 to FIG. 3, includes a housing 1. A grab handle 9 is fixedly connected to a sidewall of the housing 1. A rotating chamber 12 is formed in the grab handle 9. A sliding groove 14 communicated with the rotating chamber 12 is formed in the housing 1. The sliding groove 14 is oriented in a length direction of the housing 1.A rack 2 is disposed in the sliding groove 14, and a bottom surface of the rack 2 is a toothed surface. A transmission mechanism for driving the rack 2 to slide along the sliding groove 14 is disposed in the rotating chamber 12.A power input end of the transmission mechanism is fixedly sleeved with a pressing handle 8. A strip-shaped slot is formed on a side, corresponding to the pressing handle 8, of the rotating chamber 12, and the pressing handle 8 is located in the strip-shaped slot. Thus, the pressing handle 8 is capable of rotating around the transmission mechanism. A spring 10 is fixedly connected between the pressing handle 8 and the grab handle 9. As shown in FIG. 1, the spring 10 is in a natural state. An end of the rack 2 is fixedly connected to a hollow pull rod 3 which is capable of sleeving a Kirschner wire. Four grooves 4 are formed in an end of the housing 1 and distributed at equal arc-length intervals with the hollow pull rod 3 as the centre of acircle. Limiting rods 6 are fixedly mounted in the four grooves 4. The four limiting rods 6 are sleeved with expansion plates 5. As shown in FIG. 3, the cross section of each expansion plate 5 is arc-shaped, and the four expansion plates 5 are distributed at equal arc-length intervals with the hollow pull rod 3 as the centre of a circle. An expansion mechanism is disposed between the plurality of expansion plates 5. The expansion mechanism fixedly sleeves the outer sidewall of the hollow pull rod 3.
Preferably in the present embodiment, the expansion mechanism includes a driving block 17 and four supporting rods 18. The four supporting rods 18 correspond to the four expansion plates 5, respectively. One end of the supporting rod 18 is hinged to a concave surface of the expansion plate 5, and the other end of the supporting rod 18 is hinged to a side edge of the driving block 17.
Preferably in the present embodiment, the transmission mechanism includes a first gear 7, a second gear 13, a first rotating shaft 11 and a second rotating shaft 15. Two ends of the first rotating shaft 11 and the second rotating shaft 15 are rotatably connected to sidewalls of the rotating chamber 12.The first gear 7 and the pressing handle 8 both fixedly sleeve the first rotating shaft 11. The second gear 13 fixedly sleeves the second rotating shaft 15 and is engaged with both of the first gear 7 and the toothed surface of the rack 2.
Preferably in the present embodiment, a lug 16 for limiting the rack 2 is fixedly connected to a sidewall of the rack 2. The lug 16 is formed integrally with the rack 2.
Working Principle: after a Kirschner wire is fixed, a medical worker sleeves the Kirschner wire with the hollow pull rod 3 and then presses the pressing handle 8. Since the first gear 7 and the pressing handle 8 both fixedly sleeve the first rotating shaft 11, the first gear 7 and the first rotating shaft 11 rotate synchronously when the pressing handle 8 is pressed. Since the first gear 7 is engaged with the second gear 13 and further engaged with the rack 2, the rack 2 is capable of moving backwards along the sliding groove 14, causing the hollow pull rod 3 to move backwards synchronously. Since two ends of the supporting rods 18 are hinged to the driving block 17 and the expansion plates 5 and the expansion plates 5 further sleeve the limiting rods 6, the expansion plates 5 are capable of translating away from the hollow pull rod
3, thereby realizing expansion of a minimally invasive surgery pathway. After the completion of expansion, the pressing handle 8 may be released to return.
The specific embodiment is merely intended to explain the present invention rather than to limit the present invention. After reading this description, those skilled in the art can make 5 modifications to the embodiment without creative contribution as needed. However, any modifications that fall within the scope of the present invention shall be protected by the Patent
Law.

Claims (4)

CONCLUSIESCONCLUSIONS 1. Een verwijdingsinrichting van het pistooltype voor een minimaal invasief chirurgietraject van de wervelkolom, die een behuizing (1) omvat, waarbij — een handgreep (9) op een zijwand van de behuizing (1) is geplaatst, — een roterende kamer (12) gevormd is in de handgreep (9), — in de behuizing (1) een schuifgroef (14) is aangebracht die in verbinding staat met de roterende kamer (12); — een tandheugel (2) is geplaatst in de schuifgroef (14); — een transmissiemechanisme voor het aandrijven van de tandheugel (2) om langs de glijdende groef (14) te glijden in de roterende kamer (12) is geplaatst; — een pershendel (8) zich aan een krachtinvoeruiteinde van het transmissiemechanisme bevindt, — een veer (10) die de pershendel (8) en de handgreep (9) verbindt zich tussen de pershendel (8) en de handgreep (9) bevindt; — een holle trekstang (3) aan een uiteinde van de tandheugel (2} is geplaatst; — een aantal groeven (4) aan een uiteinde van de behuizing (1) zijn gevormd; — in de meerdere groeven (4) begrenzingsstangen (6) zijn aangebracht; — verwijdingsplaten (5) op de begrenzingsstangen (6) zijn geschoven, — de verwijdingsplaten (5) boogvormige secties hebben, — de verwijdingsplaten (5) zijn verdeeld in gelijke booglengten met de holle trekstang (3) als middelpunt van de cirkel; — tussen de meerdere verwijdingsplaten (5) zich een verwijdingsmechanisme bevindt; en — het verwijdingsmechanisme vast is op een buitenste zijwand van de holle trekstang (3) is geschoven.1. A gun-type dilator for minimally invasive spinal surgery, comprising a housing (1) with — a handle (9) located on a side wall of the housing (1), — a rotating chamber (12) is formed in the handle (9), - in the housing (1) a sliding groove (14) is provided, which communicates with the rotating chamber (12); - a rack (2) is placed in the sliding groove (14); - a transmission mechanism for driving the rack (2) to slide along the sliding groove (14) is located in the rotating chamber (12); - a press lever (8) is located at a force input end of the transmission mechanism, - a spring (10) connecting the press lever (8) and the handle (9) is located between the press lever (8) and the handle (9); - a hollow tie rod (3) is placed at one end of the rack (2}; - a number of grooves (4) are formed at one end of the housing (1); - in the several grooves (4) limit rods (6) are fitted, — expansion plates (5) are pushed onto the limit rods (6), — the expansion plates (5) have arcuate sections, — the expansion plates (5) are divided into equal arc lengths with the hollow tie rod (3) as the center of the circle ; - there is an expansion mechanism between the multiple expansion plates (5); and - the expansion mechanism is fixedly slid onto an outer side wall of the hollow tie rod (3). 2. De verwijdingsinrichting van het pistooltype voor een minimaal invasief chirurgietraject van de wervelkolom volgens conclusie 1, waarbij — het expansiemechanisme een aandrijfblok (17) en een aantal steunstangen (18) omvat; — het aantal steunstangen (18) overeenkomt met het aantal verwijdingsplaten (5); en — een uiteinde van elk van de steunstangen (18) beweegbaar is verbonden met een hol oppervlak van de verwijdingsplaat (5), terwijl het andere uiteinde daarvan beweegbaar verbonden is met een zijrand van het aandrijfblok (17).The gun-type dilation device for minimally invasive spinal surgery as claimed in claim 1, wherein - the expansion mechanism comprises a drive block (17) and a plurality of support rods (18); - the number of support rods (18) corresponds to the number of expansion plates (5); and - one end of each of the support rods (18) is movably connected to a concave surface of the expansion plate (5), while the other end thereof is movably connected to a side edge of the drive block (17). 3. De verwijdingsinrichting van het pistooltype voor een minimaal invasief chirurgietraject van de wervelkolom volgens conclusie 1, waarbijThe gun-type dilation device for minimally invasive spinal surgery according to claim 1, wherein — het transmissiemechanisme een eerste tandwiel (7), een tweede tandwiel (13), een eerste roterende as (11) en een tweede roterende as (15) omvat; — twee uiteinden van zowel de eerste roterende as (11) als de tweede roterende as (15) draaibaar verbonden zijn met de zijwanden van de roterende kamer (12); — het eerste tandwiel (7) en de pershendel (8) beide vast op de eerste roterende as (11) zijn geschoven; — het tweede tandwiel (13) vast op de tweede roterende as (15) is geschoven, en — het tweede tandwiel (13) aangrijpt op zowel het eerste tandwiel (7) als het getande oppervlak van de tandheugel (2).- the transmission mechanism comprises a first gear (7), a second gear (13), a first rotating shaft (11) and a second rotating shaft (15); - two ends of both the first rotating shaft (11) and the second rotating shaft (15) are rotatably connected to the side walls of the rotating chamber (12); - the first gear (7) and the press lever (8) are both firmly pushed onto the first rotating shaft (11); - the second gear (13) is firmly slid on the second rotating shaft (15), and - the second gear (13) engages both the first gear (7) and the toothed surface of the rack (2). 4. De verwijdingsinrichting van het pistooltype voor een minimaal invasief chirurgietraject van de wervelkolom volgens conclusie 1, waarbij een nok {18) voor het begrenzen van de tandheugel (2) op een zijwand van de tandheugel (2) is aangebracht.The gun-type dilation device for minimally invasive spinal surgery according to claim 1, wherein a cam {18) for limiting the rack (2) is provided on a side wall of the rack (2).
NL2035228A 2023-03-02 2023-06-30 Gun-type expander for a spinal minimally invasive surgery pathway NL2035228B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310191214.0A CN116370048A (en) 2023-03-02 2023-03-02 Gun type spine minimally invasive surgery channel expander

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NL2035228B1 true NL2035228B1 (en) 2024-01-09

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Publication number Priority date Publication date Assignee Title
CN117322931B (en) * 2023-12-01 2024-01-26 江苏安格尔医疗器械有限公司 Vertebra expander

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US20090005784A1 (en) * 2007-04-25 2009-01-01 Spinal Elements, Inc. Spinal implant distractor/inserter
CN106963429A (en) 2017-03-30 2017-07-21 郭新辉 The minimally invasive tunnel dilator of gasbag-type
KR20190054867A (en) * 2017-11-14 2019-05-22 주식회사 엔도비전 Direction adjustable surgical tissue removal device
CN111603210A (en) * 2020-06-03 2020-09-01 上海市浦东新区公利医院(第二军医大学附属公利医院) Surgical field expander for minimally invasive orthopedic surgery

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CN211609958U (en) * 2020-01-19 2020-10-02 李晓明 Hepatobiliary surgery is with getting stone device
CN111297426A (en) * 2020-02-11 2020-06-19 淮安市第一人民医院 A purse-string forceps for single-port laparoscopy
US11583263B2 (en) * 2020-08-19 2023-02-21 Dynamic Spine Llc Dilator assembly
CN219895880U (en) * 2023-03-02 2023-10-27 中国人民解放军总医院第四医学中心 Gun type spine minimally invasive surgery channel expander

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Publication number Priority date Publication date Assignee Title
US20090005784A1 (en) * 2007-04-25 2009-01-01 Spinal Elements, Inc. Spinal implant distractor/inserter
CN106963429A (en) 2017-03-30 2017-07-21 郭新辉 The minimally invasive tunnel dilator of gasbag-type
KR20190054867A (en) * 2017-11-14 2019-05-22 주식회사 엔도비전 Direction adjustable surgical tissue removal device
CN111603210A (en) * 2020-06-03 2020-09-01 上海市浦东新区公利医院(第二军医大学附属公利医院) Surgical field expander for minimally invasive orthopedic surgery

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