WO2018170749A1 - 微创骨组织手术设备 - Google Patents

微创骨组织手术设备 Download PDF

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Publication number
WO2018170749A1
WO2018170749A1 PCT/CN2017/077590 CN2017077590W WO2018170749A1 WO 2018170749 A1 WO2018170749 A1 WO 2018170749A1 CN 2017077590 W CN2017077590 W CN 2017077590W WO 2018170749 A1 WO2018170749 A1 WO 2018170749A1
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WO
WIPO (PCT)
Prior art keywords
cutter head
bone tissue
minimally invasive
cutter
sleeve
Prior art date
Application number
PCT/CN2017/077590
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English (en)
French (fr)
Chinese (zh)
Inventor
肖杰
Original Assignee
浙江复润医疗科技有限公司
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 浙江复润医疗科技有限公司 filed Critical 浙江复润医疗科技有限公司
Priority to PCT/CN2017/077590 priority Critical patent/WO2018170749A1/zh
Priority to JP2020500938A priority patent/JP6864945B2/ja
Publication of WO2018170749A1 publication Critical patent/WO2018170749A1/zh

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  • the present invention relates to a medical device, and more particularly to a minimally invasive electric (or pneumatic) bone tissue surgical device for performing a cutting (grinding) operation on bone tissue and a cancellous bone particle for cutting (grinding) Perform directional transmission.
  • a minimally invasive electric (or pneumatic) bone tissue surgical device for performing a cutting (grinding) operation on bone tissue and a cancellous bone particle for cutting (grinding) Perform directional transmission.
  • Bone grafting is a bone defect that needs to be strengthened or fused by transplanting bone tissue into a patient. It is commonly used for bone defects, nonunion of bone fracture, cavity filling or cavity filling after bone tumor scraping, spine and joint fusion, etc. happening.
  • Autologous bone grafts commonly used in clinical practice have many advantages, such as good histocompatibility, no graft rejection, strong bone induction, etc., and have a good effect of promoting bone fusion.
  • Common bone grafting sites for autologous bone grafting include the humerus, humerus, upper humerus and ribs. Autologous bone grafting removes the bone from these parts of the patient's body and then returns it to the patient's bone defect. .
  • the invention provides a minimally invasive bone tissue surgery device, in order to overcome the deficiencies of the prior art, and solve the technical problem that the original bone taking method has a large incision, inconvenience in taking bone, and is easy to cause harm to the patient, and is easy to leave sequelae.
  • Only a small skin incision and a tiny bone window (a few millimeters in diameter) are used to cut (or grind) the bone pulp and then transport it through the threaded channel to orient the cut (or ground) bone. Transmitting, easy to operate, and rapid operation, can greatly reduce the harm to the patient during the operation, reduce the occurrence of sequelae, and improve the safety of the operation.
  • a minimally invasive bone tissue surgical device a cutter, a sleeve, and a drive control system
  • the cutter includes a cutter head and a screw conveying portion; the surface of the screw conveying portion is provided with an external thread, wherein the sleeve is sleeved on the cutter, the cutter At least a portion of the threads on the surface of the head and the screw conveyor expose the sleeve;
  • the drive control system drives the control tool to work through the combined action of the cutter head and the screw conveyor while simultaneously cutting or grinding the bone and directional feed.
  • the shape of the cutter head is spherical, ellipsoidal, umbrella-shaped, hemispherical, semi-ellipsoidal, hemispherical + cylindrical, semi-ellipsoidal + cylindrical, conical or cylindrical and other contact with bone is blunt contact One of the face cutters.
  • the bone contact surface of the cutter head and the bone tissue is a passive contact surface.
  • the cutter head is a blunt tip that is not edged.
  • the cutter head when the cutter head is a blunt tip that is not edged, the bone tissue is cut by the front section of the screw conveying portion.
  • the front end of the spiral conveying portion is adjacent to the cutter head, and at least one spiral blade capable of cutting bone tissue is provided.
  • the surface of the blade that is not edged is a smooth surface or a frosted surface.
  • the cutter head is provided with a cutting edge, and the center of the end of the cutter head is a blunt surface.
  • the cutter head is provided with a cutting edge, and the cutting edge is a shallow cutting edge or a non-sharp cutting edge.
  • the surface of the screw conveying portion is provided with an external thread.
  • the externally threaded structure is refined into a plurality of spiral blades and spiral blades and spiral grooves.
  • the spiral conveying portion is provided with a plurality of spiral blades, and a spiral groove is formed between the spiral blade and the main body of the spiral conveying portion.
  • the pitch of the spiral conveying portion is 1 to 30 mm.
  • the spiral conveying portion has a helix angle of 10 to 89°.
  • the first spiral blade of the screw conveying portion near the cutter head is connected to the cutter head.
  • the spiral conveying portion has a certain distance between the first spiral blade and the cutter head near the cutter head portion, and the distance can be ensured.
  • the lower bone tissue is smoothly transported backward along the spiral groove of the spiral conveying portion.
  • the cross-sectional diameter of the sleeve gradually increases from the position of the cutter head toward the direction away from the cutter head.
  • the sleeve can also be in a straight cylinder mode, that is, the cross-sectional diameter of the sleeve remains constant from the position of the cutter head away from the cutter head.
  • the sleeve is divided into two parts, a first portion and a second portion, wherein the first portion is adjacent to the cutter head and the second portion is away from the cutter head; the cross-sectional diameter of the second portion is greater than the cross-sectional diameter of the first portion; A safety limited depth step is provided at the junction of the second part and the first part.
  • the cross-sectional diameter of the sleeve gradually increases from the position of the cutter head toward the direction away from the cutter head; the front end surface of the sleeve is chamfered or the front end surface is provided as a sloped surface, and the edge portion of the front end surface of the sleeve is contracted backward, or The front edge gradually increases in thickness.
  • the minimally invasive electric bone extractor is further provided with a safety pressure limiting device.
  • the safety pressure limiting device is a spring, and when the front end pressure of the cutter head exceeds a set range, the spring is compressed or bounced to control the motor to stop rotating.
  • the safety voltage limiting device is a current detecting device, and the motor is controlled to stop rotating by detecting a motor current when the current exceeds or is less than a set range;
  • the safety pressure limiting device is a pressure sensor, and when the front end pressure of the cutter head exceeds or falls below a set range, the control motor stops rotating.
  • the present invention has the following advantages:
  • the basic working principle of the minimally invasive bone tissue surgical device of the present invention drives the cutter to rotate into the cancellous bone such as the humerus and the humeral bone end, cuts (or grinds) the cancellous bone, and then passes the bone through the spiral of the cutter.
  • the conveying section realizes a directional rapid conveying function of the solid matter (bone particles).
  • Specific operation process first make a minimally invasive incision in the skin of the surgical site, such as the humerus, the ends of the tibia, etc., and then use a puncture hole opener (or drill bit) to open the cortical bone at the surgical site, and then the microscopic invention
  • the bone tissue surgical device inserts into the hole and opens the minimally invasive bone tissue surgery device.
  • the cutter cuts (or grinds) the bone under the drive of the motor (or pneumatic), and cuts the granular or muddy bone.
  • Quickly directional transmission is carried out through a screw conveying portion connected behind the cutter head, and the minimally invasive bone tissue surgical device is closed after the operation is completed, and the cutter head is pulled out.
  • the directional transport of granular or muddy bone can be collected in different ways for the patient's autograft surgery.
  • the cancellous bone can be cut (or ground) under the minimally invasive incision, the surgical trauma is small, and the surgical effect is good.
  • the minimally invasive bone tissue surgical device has a small tip end (a few millimeters in the diameter of the head) for facilitating minimally invasive surgery under minimally invasive incisions, requiring only a tiny skin incision in the patient.
  • the spiral conveying portion connected to the cutter head performs rapid directional transmission. Different collection methods can be used for autogenous bone grafting. The operation is fast, convenient, and the wound is small, and the operation effect is good.
  • Tiny surgical incisions greatly reduce the risk of lateral femoral cutaneous nerve injury, reduce the incidence of pain, fractures and diarrhea in the surgical field, and greatly reduce the postoperative infection rate of the surgical site.
  • the minimally invasive bone tissue surgical device of the invention has simple operation, saves time and labor, saves valuable operation time, and brings great convenience for clinical operation operation.
  • FIG. 1 is a schematic view showing the structure of a minimally invasive bone tissue surgical apparatus according to an embodiment of the present invention.
  • FIG. 2 is a schematic view showing the structure of a cutter of a minimally invasive bone tissue surgical device according to another embodiment of the present invention.
  • FIG. 3 is a schematic view showing the structure of a cutter of a minimally invasive bone tissue surgical apparatus according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic view showing the structure of a cutter head of a minimally invasive bone tissue surgical device tool according to Embodiment 2 of the present invention.
  • Fig. 5 is a schematic view showing the structure of a cutter head of a minimally invasive bone tissue surgical device tool according to a third embodiment of the present invention.
  • Fig. 6 is a schematic view showing the structure of a cutter head of a minimally invasive bone tissue surgical device tool according to a fourth embodiment of the present invention.
  • Fig. 7 is a schematic view showing the structure of a cutter head of a minimally invasive bone tissue surgical device tool according to a fifth embodiment of the present invention.
  • Fig. 8 is a schematic view showing the structure of a cutter head of a minimally invasive bone tissue surgical device tool according to a sixth embodiment of the present invention.
  • Fig. 9 is a schematic view showing the structure of a cutter head of a minimally invasive bone tissue surgical device tool according to a seventh embodiment of the present invention.
  • Fig. 10 is a schematic view showing the structure of a cutter head of a minimally invasive bone tissue surgical device tool according to Embodiment 8 of the present invention.
  • Fig. 1 is a schematic view showing the structure of a minimally invasive bone tissue surgical apparatus according to an embodiment of the present invention.
  • the minimally invasive bone tissue surgical device of the present invention comprises a cutter 1, a sleeve 2, a material collection device 3 and a drive control system 5.
  • the cutter 1 includes a cutter head 11 and a screw conveying portion 12.
  • the cutter head 11 mainly serves to guide the cutter into the bone tissue, and the cutter head 11 can be a grinding head or a drill bit or the like.
  • the cutter head 11 may be a small diameter blunt tip that is not edged, or may be provided with a plurality of blades.
  • the shape and surface characteristics of the cutter head 11 can be designed differently as needed.
  • the shape of the cutter head is mostly centrally symmetrical.
  • the cutter head The shape may be spherical, ellipsoidal, umbrella-shaped, hemispherical, semi-ellipsoidal, hemispherical + cylindrical, semi-ellipsoidal + cylindrical, conical or cylindrical and other contact with the bone as a passive contact surface.
  • the width of the most blunt cross section at the widest point is generally 1.2-15 mm.
  • the surface of the cutter head 11 may be a smooth surface or a frosted surface.
  • the cutting head 11 may also be provided with a cutting edge, which may be a centrally symmetrical spiral cutting edge, or a transverse blade, a longitudinal edge, a beveled edge or the like which is irregularly arranged on the surface of the cutting head.
  • the cutting edge of the cutter head 11 may be a straight tooth, a spiral tooth or a helical tooth. To avoid damage to the dermal bone, a shallow or non-sharp edge is preferred when setting the blade.
  • the screw conveying portion 12 is disposed behind the cutter head 11 and is coaxial with the cutter head 11.
  • 2 is a schematic view showing the structure of a cutter of a minimally invasive bone tissue surgical device in an embodiment of the present invention.
  • the screw conveying portion 12 is provided with a plurality of spiral blades 121 in the cutter 1, and a plurality of spiral grooves 122 are formed.
  • the cancellous bone obtained by the cutter head 11 is transported backward by the screw conveying portion 12.
  • the length of the spiral of the spiral conveying portion 12 can be set according to actual needs.
  • the screw conveying portion 12 mainly undertakes the conveying work of the bone tissue after cutting.
  • the cutting of the bone tissue is mainly performed by the screw conveying portion 12, and the front end of the screw conveying portion 12 is adjacent to the cutter head 11, and at least one spiral blade 121 capable of cutting the bone tissue is provided.
  • the first spiral blade 121 of the screw conveying portion 12 adjacent to the cutter head portion is connected to the cutter head 11 or the first spiral blade 121 of the screw conveying portion near the cutter portion has a certain distance from the cutter head 11, and Setting an appropriate distance ensures that the removed bone tissue is smoothly transported backward along the spiral groove 122 of the spiral conveying portion 12.
  • the spiral blade 121 of the spiral conveying portion 12 has a small thickness, the groove width of the spiral groove 122 is large, and the removed bone tissue is transported through the spiral groove 122.
  • the cutter head 11 of the present invention rotates the cancellous bone, and the screw conveying portion 12 transfers the cancellous bone to the rear.
  • the spiral conveying portion 12 rotates, due to the gravity of the material, and the friction between the material and the groove wall of the spiral groove 122 of the screw conveying portion 12 and the inner wall of the positioning sleeve 2, the material can only be pushed under the screw blade 121. It moves rearward along the groove bottom of the spiral groove 122.
  • the transportation of the material in the middle section mainly depends on the thrust of the material which is advanced in the backward direction, so the conveyance of the material in the conveying passage of the spiral conveying portion 12 is a kind of sliding movement.
  • the rotating spiral blade 121 transports the material for transport, and the material does not rotate together with the spiral blade 121.
  • the key lies in the gravity of the material itself, and the friction of the positioning sleeve 2 against the material and the cancellous bone when the cutter 1 is advanced. Reverse pressure of extrusion.
  • the above materials and the materials that may be mentioned below are the cancellous bone obtained by the tools of the minimally invasive bone tissue surgical equipment.
  • the present invention has been proved by a large number of experiments that the pitch of the spiral conveying portion 12 is 1-30 mm, and the helix angle is 10°-89°.
  • the sleeve 2 is sleeved on the cutter 1, and during operation, at least part of the threads of the surface of the cutter head 11 and the screw conveying portion 12 expose the sleeve 2.
  • the screw conveying portion 12 exposes at least the half-thread of the sleeve 2, and the blade 11 that satisfies the non-blade is required to cut the spiral blade 121 of the screw conveying portion 12, so that at least a part of the thread is required to expose the sleeve 2 Can be achieved.
  • the exposed thread or the spiral blade should not be too much, because it is necessary to ensure that the cut bone tissue is smoothly transported backward.
  • the sleeve 2 is divided into two parts, a first portion 21 and a second portion 22, wherein the first portion 21 is adjacent to the cutter head 11 and the second portion 22 is remote from the cutter head 11.
  • the cross-sectional diameter of the second portion 22 is greater than the cross-sectional diameter of the first portion 21.
  • a safety depth limit step 221 is provided at the junction of the sleeve second portion 22 and the first portion 21. Setting this safety depth limit step 221 can limit the depth of the tool 1 into the bone and prevent the danger of piercing the cortical bone.
  • the sleeve 2 has a hollow structure inside, and the cross-sectional diameter of the sleeve gradually increases from the position of the cutter head 11 away from the cutter head 11.
  • the cross-sectional diameter of the sleeve 2 is from the front end to the rear end (the front end of the cutter head 11 is used as the front end). ) Gradually increasing, the increase in diameter can reduce the resistance of material transportation, and can transport materials more timely and effectively.
  • the front end face of the sleeve 2 is chamfered or the front end face is provided as a bevel, the edge portion of the front end face of the sleeve 2 is contracted rearward, or the front edge is gradually increased in thickness.
  • the material collecting device 3 is connected to the sleeve 2, and is provided with a cavity, the cavity is connected with the hollow cavity of the sleeve 2, and the material conveyed by the screw conveying portion 12 is temporarily stored in the material collecting device 3, After the bone tissue of the set value is taken out once, the material collecting device 3 is taken out, and the bone tissue is taken out.
  • the drive control system 5 drives and controls the operation of the tool 1. It mainly includes motors and control systems.
  • the present invention also provides a coupling 4 for coupling the output shaft of the motor and the rotating shaft of the tool 1 for common rotation to transmit torque.
  • the minimally invasive bone tissue surgical device is further provided with a safety pressure limiting device 6.
  • the safety pressure limiting device 6 is a spring, and the spring pressure at the front end of the cutter head exceeds or falls below a set range, the spring Compressed or bounced to control the motor to stop rotating.
  • the safety pressure limiting device 6 can be in the position shown or between the tool and the motor or inside the tool.
  • the safety pressure limiting device 6 is a pressure sensor.
  • the control motor stops rotating, thereby preventing the cutter head 11 from continuing to advance.
  • a current control system may also be employed. When the current exceeds or falls below the set range, the control motor stops rotating, thereby preventing the advancement of the cutter head 11.
  • FIG. 3 is a schematic view showing the structure of a cutter of a minimally invasive bone tissue surgical apparatus according to Embodiment 1 of the present invention.
  • the cutter head of this embodiment is not edged, and the cutter head has a small diameter, which is the same as or slightly smaller than the diameter of the base of the screw conveying portion.
  • the direction of rotation of the spiral blade of the screw conveying portion is opposite to that of FIG. 2.
  • the cutting of the bone tissue is realized by using the first spiral blade of the screw conveying portion.
  • Fig. 4 is a schematic view showing the structure of a cutter head of a second embodiment of the present invention.
  • the cutter head 11 is provided with a plurality of spiral blades 111, each of which does not open to the center of the end face of the cutter head 11. That is, the center of the end of the cutter head 11 is a blunt surface, and there is no edge. This point is an important invention of the invention.
  • the cutting edge of the cutter head is not open to the center of the end of the cutter head 11, so that the end portion of the cutter head 11 is provided with a blunt surface of a certain size, so that the cutter is in the course of surgery. It has the function of protecting the cortical bone from being penetrated.
  • the front ends of the spiral blades 111 of the cutter head 11 are all acute angles.
  • the present invention is directed to the characteristics of autologous bone graft surgery, and the cutter heads 11 are all small diameter cutter heads.
  • the front end of the spiral blade 111 is a full acute angle, so that the end portion of the cutter head 11 can have a certain puncture capability for the cancellous bone.
  • the tool can penetrate the cancellous bone during the operation to ensure that it does not penetrate the cortical bone.
  • Fig. 5 is a schematic view showing the structure of a cutter head of a tool for a minimally invasive bone tissue surgery apparatus according to a third embodiment of the present invention.
  • the cutter head of the present embodiment has a spherical shape, and the cutter head is provided with a plurality of spiral cutter edges, and the spiral cutter edges are inclined blades, and each of the spiral cutter edges is not open to the center of the cutter head end surface.
  • Fig. 6 is a schematic view showing the structure of a cutter head of a cutter for a minimally invasive bone tissue surgical apparatus according to a fourth embodiment of the present invention.
  • the shape of the cutter head of the present embodiment is approximately ellipsoidal, and the cutter head is provided with a single cutting edge, and the cutting edge is longitudinally disposed.
  • the front end of the cutter head and other surfaces in contact with the bone tissue are blunt contact surfaces.
  • Fig. 7 is a schematic view showing the structure of a cutter head of a cutter for a minimally invasive bone tissue surgical apparatus according to a fifth embodiment of the present invention.
  • the shape of the cutter head of the embodiment is spherical and not edged, and the surface may be a rough matte surface or a smooth surface.
  • the cutter head diameter is slightly smaller than the same type of open cutter head.
  • Fig. 8 is a schematic view showing the structure of a cutter head of a cutter for a minimally invasive bone tissue surgical apparatus according to a sixth embodiment of the present invention.
  • the cutter head of the present embodiment has a nearly cylindrical shape, and the cutter head surface is provided with a plurality of cutting edges, and the cutting edge is a straight edge. Each blade does not open to the center of the end face of the cutter head.
  • Fig. 9 is a schematic view showing the structure of a cutter head of a cutter for a minimally invasive bone tissue surgical apparatus according to a seventh embodiment of the present invention.
  • the cutter head has a cylindrical shape, and the cutter head surface is provided with a plurality of cutting edges, and the cutting edge is a non-sharp cutting edge.
  • Fig. 10 is a schematic view showing the structure of a cutter head of a cutter for a minimally invasive bone tissue surgical apparatus according to Embodiment 8 of the present invention.
  • the cutter head of this embodiment has a cylindrical shape and is not edged.
  • the surface can be a rough matte surface or a smooth surface.

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PCT/CN2017/077590 2017-03-21 2017-03-21 微创骨组织手术设备 WO2018170749A1 (zh)

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Application Number Priority Date Filing Date Title
PCT/CN2017/077590 WO2018170749A1 (zh) 2017-03-21 2017-03-21 微创骨组织手术设备
JP2020500938A JP6864945B2 (ja) 2017-03-21 2017-03-21 低侵襲骨組織手術器具

Applications Claiming Priority (1)

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PCT/CN2017/077590 WO2018170749A1 (zh) 2017-03-21 2017-03-21 微创骨组织手术设备

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111588420A (zh) * 2020-04-23 2020-08-28 合肥市第二人民医院 一种钻井式取骨装置
CN112842453A (zh) * 2021-02-06 2021-05-28 蒋二波 一种轴向微创取骨装置
CN113440210A (zh) * 2021-05-25 2021-09-28 孙涛 微创手术用骨内病灶刮除组件
CN111588420B (zh) * 2020-04-23 2024-05-24 合肥市第二人民医院 一种钻井式取骨装置

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US20040191897A1 (en) * 2003-03-31 2004-09-30 The Cleveland Clinic Foundation Apparatus and method for harvesting bone marrow
US20070055282A1 (en) * 2003-03-31 2007-03-08 The Cleveland Clinic Foundation Apparatus and method for harvesting bone marrow
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CN105361932A (zh) * 2015-11-18 2016-03-02 陈华 一种取骨装置
CN206526078U (zh) * 2016-09-18 2017-09-29 西安市红会医院 一种微创式取骨器

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JP6020908B2 (ja) * 2012-12-06 2016-11-02 国立研究開発法人産業技術総合研究所 内視鏡用組織片採取装置
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US20040191897A1 (en) * 2003-03-31 2004-09-30 The Cleveland Clinic Foundation Apparatus and method for harvesting bone marrow
US20070055282A1 (en) * 2003-03-31 2007-03-08 The Cleveland Clinic Foundation Apparatus and method for harvesting bone marrow
WO2009030942A1 (en) * 2007-09-08 2009-03-12 Health Enterprise East Guard for bone collection
CN203852396U (zh) * 2013-12-18 2014-10-01 广州聚生生物科技有限公司 一种取骨器
CN105361932A (zh) * 2015-11-18 2016-03-02 陈华 一种取骨装置
CN206526078U (zh) * 2016-09-18 2017-09-29 西安市红会医院 一种微创式取骨器

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111588420A (zh) * 2020-04-23 2020-08-28 合肥市第二人民医院 一种钻井式取骨装置
CN111588420B (zh) * 2020-04-23 2024-05-24 合肥市第二人民医院 一种钻井式取骨装置
CN112842453A (zh) * 2021-02-06 2021-05-28 蒋二波 一种轴向微创取骨装置
CN112842453B (zh) * 2021-02-06 2022-06-21 南京汉尔斯生物科技有限公司 一种轴向微创取骨装置
CN113440210A (zh) * 2021-05-25 2021-09-28 孙涛 微创手术用骨内病灶刮除组件

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