WO2021000793A1 - 无创吸钳 - Google Patents

无创吸钳 Download PDF

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Publication number
WO2021000793A1
WO2021000793A1 PCT/CN2020/098455 CN2020098455W WO2021000793A1 WO 2021000793 A1 WO2021000793 A1 WO 2021000793A1 CN 2020098455 W CN2020098455 W CN 2020098455W WO 2021000793 A1 WO2021000793 A1 WO 2021000793A1
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WO
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Prior art keywords
suction
invasive
head
negative pressure
forceps according
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PCT/CN2020/098455
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English (en)
French (fr)
Inventor
周星
Original Assignee
周星
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Publication of WO2021000793A1 publication Critical patent/WO2021000793A1/zh

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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
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02—Instruments for taking cell samples or for biopsy
    • A61B10/04—Endoscopic instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22079—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with suction of debris

Definitions

  • the invention relates to a medical device, especially a non-invasive suction forceps device for non-invasive grasping of soft tissues.
  • tissue or specimens In clinical operations, especially with the development of endoscopic minimally invasive surgery, it is often necessary to grasp and move tissues or specimens during the operation, and the tissue or specimens must not be damaged during the grasping and moving processes.
  • tissue or specimens In surgical operations such as kidney, liver, lung, uterus, and ovarian cysts, the organs or tissues such as kidney, liver, lung, uterus, and ovarian cysts are inherently fragile. It is easy to cause accidental damage to organs or tissues or leakage of tissue fluid.
  • the instruments used to grasp and move tissues or specimens are usually pliers, tweezers and other instruments.
  • This method of operation usually produces a small area of local contact that is the first to contact, plus the existing technology.
  • the contact part between the device and the tissue is usually a rigid part. Therefore, during clinical use, the first contact part can easily cause excessive local pressure, which can cause accidental tissue injury or cause tumor or cyst rupture. Therefore, the existing technology needs to be improved.
  • the purpose of the present invention is to design a non-invasive suction forceps, which can be used to grasp and move tissues or organs that are prone to damage during clinical operations.
  • the purpose of the present invention is to invent a non-invasive suction forceps, by applying a uniform negative pressure attraction to the contact surface of the grasping tissue, to ensure that the grasping surface of the surface contact is evenly opposed to the tissue or organ during the process of grasping and moving the tissue or organ.
  • the surface of the tissue or organ exerts attractive force to avoid accidental damage to the tissue or organ, and the clinical use process is safer.
  • the non-invasive suction forceps of the present invention is characterized in that: the non-invasive suction forceps 900 includes a suction grab head 1 and a core rod 2; the suction grab head 1 is provided at the front end of the core rod 2; and the core rod 2 is provided Through hole 21, the distal end 2-1 of the through hole 21 is connected to the proximal end 1-2 of the suction head 1, and the proximal end 2-1 of the through hole 21 is connected to the negative pressure source 7 connection.
  • the suction grasping head 1 of the non-invasive suction forceps of the present invention can be connected to the negative pressure source 7 through the through hole 21 of the core rod 21. Under the suction action of the negative pressure source 7, the suction grasping The head 1 exerts a uniform negative pressure suction force on the surface of the tissue or organ 8, which can suck the tissue or organ 8 and realize the movement and turning of the tissue. Because the suction and grasping head 1 forms a surface contact with the surface of the tissue or organ 8, the pressure of the local contact part is greatly reduced, and it is not easy to cause accidental damage to the contact part. When the tissue or organ 8 is grasped, moved, It is safer during turning and so on.
  • the negative pressure source 7 is connected, the suction and grasping head 1 attracts and grasps the tissue or organ 8, and the negative pressure source 7 is disconnected, the suction and grasping head 1 relaxes, and the tissue or organ 8. It is very convenient to use when it is separated from the suction head.
  • the grabbing head 1 is an elastic grabbing head 101.
  • the working surface 1-11 of the elastic suction grab head 101 is made of a flexible material, the working surface 1-11 can be softly attached to the surface of the tissue or organ 8 during the suction and grasping process , The force applied during the suction and grasping process is softer, and it is less likely to cause accidental damage to the tissue or organ 8.
  • a reinforcing rib 11 is provided on the suction grab head 1.
  • the design of the reinforcing rib 11 can make the distal end 1-1 of the suction grab head 1 to be grasped can be opened very easily, and the clinical use process is more convenient.
  • the reinforcing rib 11 of the grabbing head 1 has a radial structure.
  • This umbrella-like radial structure design can make the distal end 1-1 of the suction grab head 1 uniformly spread radially, and the working surface 1-11 of the distal end 1-1 can be It can better fit the tissue, and at the same time, the suction and grab head 1 can be folded up conveniently.
  • the reinforcing rib 11 of the grabbing head 1 has a spiral radial structure.
  • the design of the spiral radial structure can ensure that the working surface 1-11 of the distal end 1-1 of the suction grab head 1 is evenly expanded, and at the same time, it can provide better support for the suction grab head 1. The process is more reliable. At the same time, when the suction grab head 1 is folded, it can be folded along the spiral structure, and the folding process is very smooth.
  • the wall thickness of the suction grab head 1 is non-equal thickness.
  • the wall thickness of the suction grab head 1 is thicker at the proximal end 1-2 and thinner at the distal end 1-1. This design with a thick proximal end and a thin distal end not only ensures that the distal end gently fits the tissue grasping effect, but also provides good support for the suction grasping head 1 and the grasping process is safer.
  • connection between the distal end 2-1 of the through hole 21 on the core rod 2 and the proximal end 1-2 of the suction grab head 1 is an airtight connection.
  • This air-tight connection ensures that there will be no gas leakage during the negative pressure suction process. On the one hand, it can quickly form a negative pressure attraction. On the other hand, it can minimize the gas leakage in the pneumoperitoneum during the minimally invasive endoscopic process. .
  • the non-invasive suction forceps 900 is provided with a switch 3, and the switch 3 capable of controlling the negative pressure state of the through hole 21 of the core rod 2 is provided on the proximal end 2-2 of the core rod 2.
  • the switch 3 can control the negative pressure state of the through hole 21, so as to control the suction grab head 1 to be in a suction state or a relaxed state.
  • the non-invasive suction forceps 900 is provided with a handle 4, and the handle 4 is connected to the proximal end 2-2 of the core rod 2.
  • the handle 4 can be conveniently held by the clinician and is more comfortable during use.
  • the switch 3 is installed on the handle 4.
  • the switch 3 is installed on the handle 4.
  • the clinician can directly manipulate the switch 3 on the handle 4 during operation, so that one-handed operation is realized, and no separate staff is required to
  • the negative pressure source 7 can be opened or closed, which is more convenient for clinical use.
  • the non-invasive suction forceps 900 is provided with a retracting mechanism 5 which can compress the suction grab head 1 and release the suction grab head 1 and the retracting mechanism 5 is provided on the outside of the suction grab head 1.
  • the retracting mechanism 5 can compress and retract the suction grab head 1 so as to pass through surgical channels such as a trocar sheath, and release the suction grab head 1 after the suction grab head 1 enters the abdominal cavity.
  • the design of the retracting mechanism 5 is particularly suitable for the placement of the suction grasping head 1 during endoscopic minimally invasive surgery.
  • the folding mechanism 5 is a sleeve 51 sheathed on the core rod 2.
  • the suction and grasping head 1 can be received in the sleeve by pushing the sleeve 51 forward, and the suction and grasping head 1 can be inserted into the body through the surgical channel before the Pulling the sleeve 51 backwards can release the suction grab head 1, and can be retracted or released repeatedly as needed, and the operation is very simple in clinical use.
  • a sealing device 6 is provided between the sleeve 51 and the core rod 2, and the sealing device 6 can ensure that the gas in the abdominal cavity does not leak during the operation, and ensures the stability of the pneumoperitoneum.
  • the folding mechanism 5 is a binding wire 52 that binds the suction grab head 1.
  • the strapping line is designed. Before the sucking grab head 1 enters the body, the sucking grab head 1 is folded by the strapping wire 52 in advance. After entering the body, the suction grabbing head can be released by pulling the strapping wire 52 1. Simple operation and lower manufacturing cost.
  • the suction grab head 1 has a bell-mouth structure.
  • the bell-shaped structure design can better ensure that the working surface 1-11 of the suction grab head 1 can contact the surface of the tissue or organ 8 in the form of surface contact, and the force distribution in the grasping process is more uniform and gentle. The clinical use process is safer.
  • the suction grab head 1 adopts a rotating body structure.
  • the design of the rotating body structure can make the suction grab head 1 uniformly close and unfold.
  • the suction grab head 1 adopts a rotating body structure with a small proximal end and a large distal end. Such a rotating body structure with a small proximal end and a large distal end is particularly convenient for closing and opening the large-sized suction grab head 1.
  • the switch 3 of the non-invasive suction forceps 900 is provided with three states of negative pressure suction, negative pressure retention, and negative pressure removal; by adjusting the switch 3 of the non-invasive suction forceps 900, the through hole on the core rod 2 can be made 21 and the suction grab head 1 connected to it are respectively in three states of negative pressure suction, negative pressure maintaining, and negative pressure releasing.
  • the three-state design can ensure that the suction force of the non-invasive suction forceps 900 is maintained at a constant state during the working process, and the suction force will not be too large due to continuous suction, which may cause accidents to the tissue or organ 8 The damage will not cause the suction head 1 to fall off the surface of the tissue or organ 8 due to the release of the negative pressure.
  • the reinforcing rib 11 of the grabbing head 1 is made of medical elastic metal material or medical elastic polymer material.
  • the reinforcing rib 11 is selected from the group consisting of medical elastic stainless steel, titanium nickel shape memory alloy, and elastic nylon wire.
  • the stiffener 11 designed with titanium-nickel shape memory alloy material can be prefabricated into a small diameter columnar structure outside the body. After entering the human body, it will automatically expand under the effect of body temperature, so as to realize the gripping head 1 in the body. Automatically expand.
  • the reinforcing rib 11 may be any of the above-mentioned elastic materials or other materials and combinations thereof. The applicant will not list them one by one here, but they do not deviate from the protection scope of the present application.
  • the grabbing head 1 is made of medical elastic material.
  • the medical elastic material of the grabbing head 1 is selected from: medical silica gel, medical rubber, medical polyurethane, medical polyethylene, medical nylon, medical polypropylene, and combinations thereof.
  • the grabbing head 1 can be the above-mentioned various elastic materials or other materials and combinations thereof. The applicant will not list them one by one here, but they do not deviate from the protection scope of this application.
  • the non-invasive suction forceps 900 is made of medical materials.
  • the design of medical materials can better meet the requirements of clinical biocompatibility.
  • the suction and grasping head 1 is adsorbed on the surface of the kidney, and when the suction and grasping head 1 can drive the kidney to move and turn, the switch 3 is placed in a negative pressure holding state, and various kidney operations are performed at this time After the operation is completed, the switch 3 is placed in the negative pressure release state. At this time, the negative pressure is released, and the suction grasping head 1 is separated from the surface of the kidney, and the non-invasive suction forceps 900 of the present invention can be taken out of the body.
  • the non-invasive suction forceps of the present invention includes a suction grab head 1 and a core rod 2.
  • the gripping head 1 can be connected to the negative pressure source 7 through the through hole 21 of the core rod 21. Under the suction action of the negative pressure source 7, the gripping head 1 can The tissue or organ 8 sucks and realizes the movement and turning of the tissue. Since the suction and grasping head 1 forms a uniform surface contact with the surface of the tissue or organ 8, the pressure of the local contact part is greatly reduced, and it is not easy to cause accidental damage to the contact part. It is safer during moving and flipping.
  • the switch 3 can make the through hole 21 on the core rod 2 and the suction grab head 1 connected to it be in three states: negative pressure suction, negative pressure holding, and negative pressure removal, which can ensure that In the non-invasive suction forceps 900, the negative pressure suction is maintained in a constant state during the working process.
  • the non-invasive suction forceps of the present invention also includes a retracting mechanism 5, which can compress and retract the suction grasping head 1, so as to pass through surgical passages such as a trocar sheath, and enter the abdominal cavity at the suction grasping head 1. The suction and grasping head 1 is released later, which is particularly suitable for the placement of the suction and grasping head 1 during endoscopic minimally invasive surgery.
  • Fig. 1 is a three-dimensional schematic diagram of the non-invasive suction forceps of the present invention.
  • Figure 1-1 is a schematic diagram of the working principle of Figure 1.
  • Figure 1-2 is a front view of Figure 1.
  • Fig. 1-3 is a cross-sectional view taken along line A-A of Fig. 1-2.
  • Figure 1-4 is an enlarged view of B of Figure 1-3.
  • Fig. 2 is a three-dimensional schematic diagram of the non-invasive suction forceps of the present invention with a switch.
  • Figure 2-1 is a schematic diagram of the working principle of Figure 2.
  • Fig. 2-2 is a top view of the switch of Fig. 2 in a negative pressure suction state.
  • Figure 2-3 is a C-C cross-sectional view of Figure 2-2, showing a schematic diagram of the structure when the switch is in a negative pressure suction state.
  • Figures 2-4 are top views of the switch of Figure 2 when it is in a negative pressure holding state.
  • Figure 2-5 is the D-D cross-sectional view of Figure 2-4, showing the schematic diagram of the structure when the switch is in the negative pressure holding state.
  • Figure 2-6 is a top view of the switch of Figure 2 when the negative pressure is released.
  • Figure 2-7 is the E-E cross-sectional view of Figure 2-6, showing the schematic diagram of the structure when the switch is in the negative pressure relief state.
  • Fig. 3 is a schematic structural diagram of the non-invasive suction forceps of the present invention with a handle.
  • Figure 3-1 is the working principle diagram of Figure 3.
  • Fig. 3-2 is a top view of the switch of Fig. 3 in a negative pressure suction state.
  • Figure 3-3 is the F-F cross-sectional view of Figure 3-2, showing the schematic diagram of the structure when the switch is in a negative pressure suction state.
  • Figure 3-4 is a top view of the switch of Figure 3 when it is in a negative pressure holding state.
  • Figure 3-5 is a G-G cross-sectional view of Figure 3-4, showing a schematic diagram of the structure when the switch is in a negative pressure holding state.
  • Figure 3-6 is a top view of the switch of Figure 3 when the negative pressure is removed.
  • Figure 3-7 is the H-H cross-sectional view of Figure 3-6, showing the structure of the switch when the switch is in the negative pressure relief state.
  • Fig. 4 is a schematic diagram of the three-dimensional structure of the non-invasive suction forceps of the present invention with a sleeve-type folding mechanism.
  • Figure 4-1 is a schematic diagram of the structure of the suction grab head of Figure 4 when it is released.
  • Figure 4-2 is the working principle diagram of Figure 4-1.
  • Figure 4-3 is the front view of Figure 4-1.
  • Fig. 4-4 is a cross-sectional view taken along the line I-I of Fig. 4-3.
  • Figure 4-5 is an enlarged view of J in Figure 4-4.
  • Figure 4-6 is a front view of Figure 4.
  • Fig. 4-7 is a K-K sectional view of Fig. 4-6.
  • Fig. 4-8 is an enlarged view of L of Fig. 4-7.
  • Fig. 5 is a schematic structural view of the non-invasive suction forceps of the present invention with reinforcing ribs.
  • Figure 5-1 is an enlarged view of M in Figure 5.
  • Fig. 6 is a schematic structural view of the non-invasive suction forceps of the present invention using elastic metal wire mesh as the reinforcing rib.
  • Fig. 7 is a schematic diagram of the structure of the non-invasive suction forceps of the present invention including a strapping-type gathering mechanism.
  • Fig. 7-1 is an enlarged view of position N in Fig. 7.
  • Fig. 7-2 is a schematic diagram of the structure when the suction grab head of Fig. 7 is released.
  • 101 is an elastic suction grab head
  • 900 is the non-invasive suction forceps of the present invention.
  • 1 is a suction head
  • 2 is a core rod
  • 3 is a switch
  • 4 is a handle
  • 5 is a gathering device
  • 6 is a sealing device
  • 7 is a negative pressure source
  • 8 is the tissue or organ.
  • 11 is a reinforcing rib
  • 1-1 is the distal end of the suction head
  • 1-2 is the proximal end of the suction head
  • 1-11 is the working surface of the suction head.
  • 21 is a through hole
  • 22 is a negative pressure interface
  • 2-1 is the distal end of the core rod
  • 2-2 is the proximal end of the core rod.
  • 51 is the sleeve
  • 52 is the strapping line
  • 52-1 is the pull ring.
  • 61 is a sealing ring.
  • Example 1 Non-invasive suction forceps of the present invention
  • the non-invasive suction forceps of this embodiment includes a suction grab head 1 and a core rod 2.
  • the suction grab head 1 is provided at the front end of the core rod 2; the core rod 2 is provided with a through hole 21, the distal end 2-1 of the through hole 21 and the proximal end 1- 2 phase connection, the proximal end 2-1 of the through hole 21 is connected to the negative pressure source 7.
  • the grabbing head 1 is an elastic grabbing head 101.
  • the working surface 1-11 of the elastic suction and grasping head 101 is made of a flexible material. In the process of suction and grasping, the working surface 1-11 can be softly attached to the surface of the tissue or organ 8. The force applied during the process is softer and less likely to cause accidental damage to the tissue or organ 8.
  • suction grab head 1 can also be designed with a rigid structure.
  • the applicant does not give specific examples here, but it does not deviate from the protection scope of this application.
  • the suction grab head 1 is provided with a reinforcing rib 11.
  • the design of the reinforcing rib 11 can make the distal end 1-1 of the suction grab head 1 to be grasped can be opened very easily, and the clinical use process is more convenient.
  • the reinforcing rib 11 of the grabbing head 1 has a radial structure.
  • This umbrella-like radial structure design can make the distal end 1-1 of the suction grab head 1 uniformly spread radially, and the working surface 1-11 of the distal end 1-1 can be It can better fit the tissue, and at the same time, the suction and grab head 1 can be folded up conveniently.
  • the reinforcing rib 11 of the suction grab head 1 can also be designed in other various structures.
  • the reinforcing rib 11 of the suction grab head 1 can be a spiral radial structure.
  • the design of the spiral radial structure can ensure that the working surface 1-11 of the distal end 1-1 of the suction grab head 1 is evenly expanded, and at the same time, it can provide better support for the suction grab head 1. The process is more reliable. At the same time, when the suction grab head 1 is folded, it can be recovered along the spiral structure, and the folding process is very smooth.
  • the above various structural designs do not depart from the protection scope of this application.
  • the reinforcing rib 11 of the grabbing head 1 is made of medical elastic metal material or medical elastic polymer material.
  • the material of the reinforcing rib 11 can be various materials such as medical elastic stainless steel, titanium-nickel shape memory alloy, and elastic nylon wire.
  • the reinforcing ribs 11 of the titanium-nickel shape memory alloy mesh can be prefabricated into a small-diameter columnar structure outside the body. After entering the human body, the grabbing head 1 is automatically deployed in the body under the action of body temperature. Refer to Figure 6 .
  • the reinforcing rib 11 may be any of the above-mentioned elastic materials or other materials and combinations thereof. The applicant will not list them one by one here, but they do not deviate from the protection scope of the present application.
  • the wall thickness of the suction grab head 1 is non-equal thickness.
  • the wall thickness of the suction grab head 1 is thicker at the proximal end 1-2 and thinner at the distal end 1-1. This design with a thick proximal end and a thin distal end not only ensures that the distal end gently fits the tissue grasping effect, but also provides good support for the suction grasping head 1 and the grasping process is safer.
  • the suction grab head 1 has a bell-mouth structure.
  • the bell-shaped structure design can better ensure that the working surface 1-11 of the suction grab head 1 can contact the surface of the tissue or organ 8 in the form of surface contact, and the force distribution in the grasping process is more uniform and gentle. The clinical use process is safer.
  • the suction grab head 1 can adopt a rotating body structure with a small proximal end and a large distal end to facilitate The closing and unfolding of the suction grab head 1 are described.
  • the applicant will not give specific examples one by one, but they do not deviate from the scope of this application.
  • the grabbing head 1 is made of medical elastic material.
  • the medical elastic material of the grabbing head 1 is selected from: medical silica gel, medical rubber, medical polyurethane, medical polyethylene, medical nylon, medical polypropylene, and combinations thereof.
  • the grabbing head 1 can be the above-mentioned various elastic materials or other materials and combinations thereof. The applicant will not list them one by one here, but they do not deviate from the protection scope of this application.
  • connection between the distal end 2-1 of the through hole 21 on the core rod 2 and the proximal end 1-2 of the suction grab head 1 is an airtight connection.
  • This air-tight connection ensures that there will be no gas leakage during the negative pressure suction process. On the one hand, it can quickly form a negative pressure attraction. On the other hand, it can minimize the gas leakage in the pneumoperitoneum when used in endoscopic surgery. .
  • the non-invasive suction forceps 900 includes a switch 3 and a handle 4.
  • the handle 4 is connected to the proximal end 2-2 of the core rod 2, and the tail of the handle 4 is provided with a negative pressure interface 22, and the negative pressure source 7 passes through the negative pressure interface 22 and the through hole. 21 connected.
  • the switch 3 is installed on the handle 4. The switch 3 can control the negative pressure state of the through hole 21, thereby controlling the suction grab head 1 to be in a suction state or a relaxed state.
  • the handle 4 can be conveniently held by the clinician and is more comfortable during use.
  • the switch 3 has three states of negative pressure suction, negative pressure holding, and negative pressure removal; by adjusting the non-invasive suction forceps
  • the switch 3 of 900 can make the through hole 21 on the core rod 2 and the suction and grab head 1 connected to it be in the three states of negative pressure suction, negative pressure maintaining, and negative pressure removal respectively.
  • the three-state design can ensure that the suction force of the non-invasive suction forceps 900 is maintained at a constant state during the working process, and the suction force will not be too large due to continuous suction, which may cause accidents to the tissue or organ 8 The damage will not cause the suction head 1 to fall off the surface of the tissue or organ 8 due to the release of the negative pressure.
  • the switch 3 is installed on the handle 4. During clinical use, the clinician can directly control the switch 3 on the handle 4 during operation, realizing one-handed operation, and no separate staff is required to
  • the negative pressure source 7 can be opened or closed, which is more convenient for clinical use.
  • the non-invasive suction forceps 900 is made of medical materials.
  • the design of medical materials can better meet the requirements of clinical biocompatibility.
  • the suction grab head 1 adopts the design of the elastic grab suction head 101
  • the working surface 1-11 of the elastic grab grab head 101 forms a uniform and soft surface contact with the surface of the tissue or organ 8 ,
  • the pressure of the local contact part is greatly reduced, and it is not easy to cause accidental damage to the contact part.
  • accidental damage to the tissue or organ can be avoided to the greatest extent.
  • the switch 3 can make the through hole 21 on the core rod 2 and the suction grab head 1 connected to it be in three states: negative pressure suction, negative pressure holding, and negative pressure removal, which can ensure that Said non-invasive suction forceps 900 maintains its negative pressure suction in a constant state during the working process, and will not cause excessive attraction due to continuous suction, causing accidental damage to the tissue or organ 8, and will not be relieved by negative pressure As a result, the suction head 1 falls off the surface of the tissue or organ 8, and the clinical process is safer.
  • Embodiment 2 The non-invasive suction forceps of the present invention containing a sleeve retracting device
  • the difference between this embodiment and Embodiment 1 is that in this embodiment, the non-invasive suction forceps 900 also includes a retracting mechanism 5.
  • the folding mechanism 5 can compress the suction grab head 1 and release the suction grab head 1, and the folding mechanism 5 is arranged outside the suction grab head 1.
  • the retracting mechanism 5 can compress and retract the suction grab head 1 so as to pass through surgical channels such as a trocar sheath, and release the suction grab head 1 after the suction grab head 1 enters the abdominal cavity.
  • the design of the retracting mechanism 5 is particularly suitable for the placement of the suction grasping head 1 during endoscopic minimally invasive surgery.
  • the folding mechanism 5 is a sleeve 51 sheathed outside the core rod 2.
  • a sealing mechanism 6 is provided between the sleeve 51 and the core rod 2.
  • the sealing device 6 can ensure The gas in the abdominal cavity does not leak, ensuring the stability of the pneumoperitoneum.
  • the sealing mechanism 6 is a sealing ring 61.
  • those skilled in the art can design sealing devices of various structures as required. The applicant will not list them one by one here, but they do not deviate from the protection scope of the present application.
  • the suction and grasping head 1 can be received in the sleeve by pushing the sleeve 51 forward, and the suction and grasping head 1 can be inserted into the body through the surgical channel before the Pulling the sleeve 51 backwards can release the suction grab head 1, and can be retracted or released repeatedly as needed, and the operation is very simple in clinical use.
  • the switch 3 is placed in the negative pressure release state. At this time, the negative pressure is released, and the suction and grasping head 1 separates from the surface of the kidney, pushing the sleeve forward 51. Fold the suction head 1 into the sleeve 51, and then the non-invasive suction forceps 900 of the present invention can be taken out through the trocar sheath.
  • the suction and grasping head 1 can be easily inserted into the body from a surgical channel such as a trocar sheath, which is especially suitable for minimally invasive endoscopy Used in surgery.
  • Embodiment 3 the non-invasive suction forceps of the present invention with a tying-type gathering mechanism
  • the folding mechanism 5 is a binding wire 52 that binds the suction grab head 1.
  • the binding wire 52 is tied on the outer side of the suction grab head 1 to gather the suction grab head.
  • the suction head 1 is bound and folded with the distal end of the binding wire 52, the switch 3 is placed in a negative pressure holding state, and then the suction The grasping head 1 is inserted into the abdominal cavity through the trocar sheath, and then the pull ring 52-1 of the binding wire 52 remaining outside the body is pulled, the binding wire 52 is loosened, and the suction grasping head 1 is unfolded, refer to FIG. 7 -2.
  • the suction and grasping head 1 In the process of pulling the suction and grasping head 1 out of the body, since the suction and grasping head 1 is a rotating body structure with a small proximal end and a large distal end, it can be very easy Pull out the body from the trocar sheath while closing the ground.
  • the design of the strapping line in this embodiment is that before the grabbing head 1 enters the body, the grabbing head 1 is folded by the strapping line 52 in advance, and the grabbing head 1 only needs to be pulled after entering the body.
  • the wire 52 can release the suction and grab head 1, simple operation and lower manufacturing cost.

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Abstract

一种无创吸钳（900）含吸抓头（1）和芯杆（2）。吸抓头（1）经芯杆（2）的通孔（21）能与负压源（7）相连接，在负压源（7）的负压吸引作用下，吸抓头（1）能将组织或器官吸住，并实现组织的移动、翻动等动作。因吸抓头（1）与组织或器官表面形成均匀的面接触，降低了局部接触部位的压强，不容易造成接触部位的意外损伤，在组织或器官的抓取、移动、翻动等过程中更加安全。无创吸钳（900）还含收拢机构（5），收拢机构（5）能将吸抓头（1）压缩、收拢，从而通过穿刺器鞘管等手术通道，并能在吸抓头（1）进入腹腔后释放吸抓头（1），尤其适合于腔镜微创手术过程中吸抓头（1）的置入。

Description

无创吸钳 技术领域
本发明涉及一种医疗器械，特别是用于无创抓取软组织的无创吸钳器械。
背景技术
在临床手术中，尤其是随着腔镜微创手术的发展，在手术过程中，经常需要对组织或标本进行抓取、移动，并且在抓取、移动过程中不能造成组织或标本的破损。比如在肾脏、肝脏、肺、子宫、卵巢囊肿等外科手术中，由于肾脏、肝脏、肺、子宫、卵巢囊肿等器官或组织本身就比较脆弱，在抓取和移动过程中，如果控制不好很容易造成器官或组织的意外损伤或组织液的渗漏。
特别是对于囊状肿瘤，在取出切除的肿瘤时，更是需要非常注意，因为一旦肿瘤包囊意外破损，就非常容易造成癌细胞的播种和转移，后果将非常严重。
而现有的临床手术中，用于抓取、移动组织或标本的器械通常是钳子、镊子等器械，这种操作方式通常会产生一个最先接触的小面积局部接触部位，加之现有技术的器械和组织接触的部位通常都是刚性部件，因此，在临床使用过程中，在上述最先接触的部位非常容易造成局部压力过大，从而造成组织的意外伤害，或造成肿瘤或囊肿的破裂。因此，需要对现有技术进行改进。
本发明的目的就在于设计一种无创吸钳，在临床手术过程中，用于对易于破损的组织或器官进行抓取和移动。
发明内容
本发明的目的在于发明一种无创吸钳，通过对抓取组织的接触面施加均匀的负压吸引力，保证在抓取和移动组织或器官的过程中，面接触的抓取面均匀地对组织或器官表面施加吸引力，从而避免对组织或器官造成意外伤害，临床使用过程更加安全。
本发明之无创吸钳，其特征在于：所述无创吸钳900含吸抓头1及芯杆2；所述吸抓头1设在所述芯杆2的前端；所述芯杆2上设通孔21，所述通孔21的远端2-1与所述吸抓头1的近端1-2相连接，所述通孔21的近端2-1与所述负压源7相连接。
本发明之无创吸钳的吸抓头1经所述芯杆21的通孔21能与所述负压源7相连接， 在所述负压源7的负压吸引作用下，所述吸抓头1对组织或器官8表面施加均匀的负压吸引力，能将所述组织或器官8吸住，并实现组织的移动、翻动等动作。因所述吸抓头1与所述组织或器官8表面形成面接触，大大降低了局部接触部位的压强，不容易造成接触部位的意外损伤，在所述组织或器官8的抓取、移动、翻动等过程中更加安全。而且连接所述负压源7，所述吸抓头1吸引、抓取住所述组织或器官8，断开所述负压源7，所述吸抓头1松弛，所述所述组织或器官8脱离所述吸抓头，使用过程非常方便。
进一步，所述吸抓头1为弹性吸抓头101。尤其是当所述弹性吸抓头101的工作面1-11由柔性材料制成，在吸抓的过程中，所述工作面1-11可以柔软地贴合在所述组织或器官8的表面，吸抓的过程施加的力更加柔和，更不容易对所述组织或器官8造成意外损伤。
所述吸抓头1上设有加强筋11。所述加强筋11的设计，可以使得所述吸抓头1需要进行抓取的远端1-1能非常轻松地张开，临床使用过程更加方便。
所述吸抓头1的加强筋11是放射状结构。这种类似伞状的放射状的结构设计，可以使得所述吸抓头1的远端1-1能均匀地放射形撑开，抓取过程所述远端1-1的工作面1-11能更好地贴合组织，同时又能很方便地将所述吸抓头1进行收拢。
所述吸抓头1的加强筋11是螺旋放射状结构。螺旋放射状结构的设计，可以在保证所述吸抓头1的远端1-1的工作面1-11均匀展开的同时，对所述吸抓头1还可以提供的更好的支撑，抓取过程更加可靠。同时所述吸抓头1进行收拢时，能顺着螺旋结构进行收拢，收拢过程非常顺畅。
所述吸抓头1的壁厚是非等厚。
所述吸抓头1的壁厚在近端1-2厚，在所述远端1-1薄。这种近端厚远端薄的设计，既保证远端轻柔地贴合组织的抓取效果，又能对所述吸抓头1提供良好的支撑，抓取过程更加安全。
所述芯杆2上的通孔21的远端2-1与所述吸抓头1的近端1-2的连接是气密性连接。这种气密性连接，保证负压吸引过程中不会产生气体的泄露，一方面能快速形成负压吸引力，另一方面对于腔镜微创过程中，可以尽量减少气腹中气体的泄露。
所述无创吸钳900设有开关3，能控制所述芯杆2的通孔21的负压状态的所述开关3设在所述芯杆2的近端2-2上。所述开关3能控制所述通孔21的负压状态，从而控制所述吸抓头1处于吸附状态或松弛状态。
所述无创吸钳900设有手柄4，所述手柄4连接在所述芯杆2的近端2-2上。所述手柄4能让临床医生方便地握持，使用过程中更加舒适。
所述手柄4上安装有所述开关3。所述开关3安装在所述手柄4上，临床使用过程中， 临床医生操作时可以直接在所述手柄4上操控所述开关3，实现单手操作，而且不需要单独的工作人员对所述负压源7进行开启或闭合，临床使用更加方便。
所述无创吸钳900设有收拢机构5，能压缩所述吸抓头1，并释放所述吸抓头1的所述收拢机构5设在所述吸抓头1的外侧。所述收拢机构5能将所述吸抓头1压缩、收拢，从而通过穿刺器鞘管等手术通道，并能在所述吸抓头1进入腹腔后释放所述吸抓头1。所述收拢机构5的设计尤其适合于腔镜微创手术过程中所述吸抓头1的置入。
所述收拢机构5是套在所述芯杆2的套管51。所述套管51的设计，只需将所述套管51向前推动即可将所述吸抓头1收入套管内，将所述吸抓头1经手术通道置入体内后再将所述套管51向后拉动，即可释放所述吸抓头1，而且可以根据需要反复收拢或释放，临床使用中操作非常简单。所述套管51和所述芯杆2之间设有密封装置6，所述密封装置6能保证操作过程中腹腔中的气体不发生泄露，保证气腹的稳定性。
所述收拢机构5是捆绑所述吸抓头1的捆扎线52。捆扎线的设计，在所述吸抓头1进入体内前预先通过所述捆扎线52将所述吸抓头1收拢，进入体内后只需拉动所述捆扎线52即可释放所述吸抓头1，操作简单而且制造成本更低。
所述吸抓头1呈喇叭口型结构。喇叭口型的结构设计，可以更好地保证所述吸抓头1的工作面1-11能以面接触的形式和所述组织或器官8表面接触，抓取过程力度分布更加均匀、轻柔，临床使用过程更加安全。
所述吸抓头1采用旋转体结构。旋转体结构的设计可以使得所述吸抓头1均匀的收拢与展开。
所述吸抓头1采用近端小远端大的旋转体结构。这种近端小远端大的旋转体结构尤其方便大尺寸的所述吸抓头1的收拢和打开。
所述无创吸钳900的开关3设有负压吸引、负压保持、负压卸除3种状态；通过调节所述无创吸钳900的开关3，可以使得所述芯杆2上的通孔21及与其相连接的所述吸抓头1分别处于负压吸引、负压保持、负压卸除3种状态。三种状态的设计，可以保证所述无创吸钳900在工作过程中其负压吸引保持在一个恒定的状态，不会由于持续的吸引而吸引力过大，造成所述组织或器官8的意外损伤，也不会由于负压解除而造成所述吸抓头1从所述组织或器官8表面脱落。
申请人在此只是具体介绍了上述旋转体的结构，在实际应用中，本领域的技术人员可以根据需要设计出不同的吸抓头结构，但都不脱离本申请的保护范围。
所述吸抓头1的加强筋11采用医用弹性金属材料或医用弹性高分子材料制造。
制造所述加强筋11选自：医用弹性不锈钢、钛镍形状记忆合金、弹性尼龙丝。其中 钛镍形状记忆合金材料设计的所述加强筋11可以在体外预制成小直径的柱状结构，待进入人体后，在体温的作用下自动展开，从而实现所述吸抓头1在体内的自动展开。
所述加强筋11可以是上述各种弹性材料或其他材料及其组合，申请人在此不一一列举，但都不脱离本申请的保护范围。
所述吸抓头1采用医用弹性材料制造。
所述吸抓头1医用弹性材料选自：医用硅胶、医用橡胶、医用聚氨酯、医用聚乙烯、医用尼龙、医用聚丙烯及其组合。
所述吸抓头1可以是上述各种弹性材料或其他材料及其组合，申请人在此不一一列举，但都不脱离本申请的保护范围。
所述无创吸钳900采用医用材料制造。医用材料的设计可以更好地满足临床生物相容性的要求。
以经腔镜肾脏手术为例，临床使用时，首先将所述吸抓头1收拢到所述套管51内，将所述开关3置于负压保持状态，将所述无创吸钳900的所述吸抓头1经穿刺器鞘管置入腹腔内，然后向后退所述套管51，释放所述吸抓头1，然后将所述开关3置于负压吸引状态，开启所述负压源7，所述吸抓头1吸附在肾脏表面，待所述吸抓头1能带动肾脏进行移动和翻动时，将所述开关3置于负压保持状态，此时进行肾脏各种手术，手术完成后，将所述开关3置于负压解除状态，此时负压解除，所述吸抓头1从肾脏表面脱离，即可将本发明之无创吸钳900从体内取出。
本发明之无创吸钳含吸抓头1和芯杆2。所述吸抓头1经所述芯杆21的通孔21能与所述负压源7相连接，在所述负压源7的负压吸引作用下，所述吸抓头1能将所述组织或器官8吸住，并实现组织的移动、翻动等动作。因所述吸抓头1与所述组织或器官8表面形成均匀的面接触，大大降低了局部接触部位的压强，不容易造成接触部位的意外损伤，在所述组织或器官8的抓取、移动、翻动等过程中更加安全。而且所述开关3，可以使得所述芯杆2上的通孔21及与其相连接的所述吸抓头1分别处于负压吸引、负压保持、负压卸除3种状态，可以保证所述无创吸钳900在工作过程中其负压吸引保持在一个恒定的状态。本发明之无创吸钳还含收拢机构5，所述收拢机构5能将所述吸抓头1压缩、收拢，从而通过穿刺器鞘管等手术通道，并能在所述吸抓头1进入腹腔后释放所述吸抓头1，尤其适合于腔镜微创手术过程中所述吸抓头1的置入。
附图说明
图1是本发明之无创吸钳的立体结构示意图。
图1-1是图1的工作原理示意图。
图1-2是图1的主视图。
图1-3是图1-2的A-A剖视图。
图1-4是图1-3的B处放大图。
图2是带开关的本发明之无创吸钳的立体结构示意图。
图2-1是图2的工作原理示意图。
图2-2是图2的开关处于负压吸引状态时的俯视图。
图2-3是图2-2的C-C剖视图，展示了开关处于负压吸引状态时的结构示意图。
图2-4是图2的开关处于负压保持状态时的俯视图。
图2-5是图2-4的D-D剖视图，展示了开关处于负压保持状态时的结构示意图。
图2-6是图2的开关处于负压卸除状态时的俯视图。
图2-7是图2-6的E-E剖视图，展示了开关处于负压卸除状态时的结构示意图。
图3是含手柄的本发明之无创吸钳的结构示意图。
图3-1是图3的工作原理图。
图3-2是图3的开关处于负压吸引状态时的俯视图。
图3-3是图3-2的F-F剖视图，展示了开关处于负压吸引状态时的结构示意图。
图3-4是图3的开关处于负压保持状态时的俯视图。
图3-5是图3-4的G-G剖视图，展示了开关处于负压保持状态时的结构示意图。
图3-6是图3的开关处于负压卸除状态时的俯视图。
图3-7是图3-6的H-H剖视图，展示了开关处于负压卸除状态时的结构示意图。
图4是带套管型收拢机构的本发明之无创吸钳的立体结构示意图。
图4-1是图4的吸抓头被释放时的结构示意图。
图4-2是图4-1的工作原理图。
图4-3是图4-1的主视图。
图4-4是图4-3的I-I剖视图。
图4-5是图4-4的J处放大图。
图4-6是图4的主视图。
图4-7是图4-6的K-K剖视图。
图4-8是图4-7的L处放大图。
图5是带加强筋的本发明之无创吸钳的的结构示意图。
图5-1是图5的M处放大图。
图6是采用弹性金属丝网作为加强筋的本发明之无创吸钳的结构示意图。
图7是含捆扎线式收拢机构的本发明之无创吸钳的结构示意图。
图7-1是图7的N处放大图。
图7-2是图7的吸抓头被释放时的结构示意图。
上述图中：
101为弹性吸抓头，900为本发明之无创吸钳。
1为吸抓头，2为芯杆，3为开关，4为手柄，5为收拢装置，6为密封装置，7为负压源，8为所述组织或器官。
11为加强筋，1-1为吸抓头的远端，1-2为吸抓头的近端，1-11为吸抓头的工作面。
21为通孔，22为负压接口，2-1为芯杆的远端，2-2为芯杆的近端。
51为套管，52为捆扎线，52-1为拉环。
61为密封圈。
具体实施方式
实施例1：本发明之无创吸钳
参考图1至图1-4，本实施例之无创吸钳含吸抓头1和芯杆2。
所述吸抓头1设在所述芯杆2的前端；所述芯杆2上设通孔21，所述通孔21的远端2-1与所述吸抓头1的近端1-2相连接，所述通孔21的近端2-1与所述负压源7相连接。
本实施例中，所述吸抓头1为弹性吸抓头101。所述弹性吸抓头101的工作面1-11由柔性材料制成，在吸抓的过程中，所述工作面1-11可以柔软地贴合在所述组织或器官8的表面，吸抓的过程施加的力更加柔和，更不容易对所述组织或器官8造成意外损伤。
当然，在实际应用中，所述吸抓头1也可以采用刚性结构设计，申请人在此不具体举例说明，但都不脱离本申请的保护范围。
参考图2、图3、图5和图5-1，所述吸抓头1上设有加强筋11。所述加强筋11的设计，可以使得所述吸抓头1需要进行抓取的远端1-1能非常轻松地张开，临床使用过程更加方便。
本实施例中，所述吸抓头1的加强筋11是放射状结构。这种类似伞状的放射状的结构设计，可以使得所述吸抓头1的远端1-1能均匀地放射形撑开，抓取过程所述远端1-1的工作面1-11能更好地贴合组织，同时又能很方便地将所述吸抓头1进行收拢。
当然，实际应用中，所述吸抓头1的加强筋11还可以设计成其它各种结构，如所述 吸抓头1的加强筋11可以是螺旋放射状结构。螺旋放射状结构的设计，可以在保证所述吸抓头1的远端1-1的工作面1-11均匀展开的同时，对所述吸抓头1还可以提供的更好的支撑，抓取过程更加可靠。同时所述吸抓头1进行收拢时，能顺着螺旋结构进行向回收拢，收拢过程非常顺畅。但上述各种结构设计都并不脱离本申请的保护范围。
所述吸抓头1的加强筋11采用医用弹性金属材料或医用弹性高分子材料制造。
制造所述加强筋11的材料可以是医用弹性不锈钢、钛镍形状记忆合金、弹性尼龙丝等各种材料。其中钛镍形状记忆合金网的所述加强筋11可以在体外预制成小直径的柱状结构，待进入人体后，在体温的作用下所述吸抓头1在体内的自动展开，参考图6。
所述加强筋11可以是上述各种弹性材料或其他材料及其组合，申请人在此不一一列举，但都不脱离本申请的保护范围。
参考图1-3和图1-4，所述吸抓头1的壁厚是非等厚。
所述吸抓头1的壁厚在近端1-2厚，在所述远端1-1薄。这种近端厚远端薄的设计，既保证远端轻柔地贴合组织的抓取效果，又能对所述吸抓头1提供良好的支撑，抓取过程更加安全。
参考图1至图1-4，本实施例中，所述吸抓头1呈喇叭口型结构。喇叭口型的结构设计，可以更好地保证所述吸抓头1的工作面1-11能以面接触的形式和所述组织或器官8表面接触，抓取过程力度分布更加均匀、轻柔，临床使用过程更加安全。
实际应用中，本领域的技术人员可以根据需要设计出各种不同的所述吸抓头1的结构，如所述吸抓头1可以采用近端小远端大的旋转体结构，来方便所述吸抓头1的收拢和展开。申请人在此不一一具体举例说明，但都不脱离本申请的请求范围。
所述吸抓头1采用医用弹性材料制造。
所述吸抓头1医用弹性材料选自：医用硅胶、医用橡胶、医用聚氨酯、医用聚乙烯、医用尼龙、医用聚丙烯及其组合。
所述吸抓头1可以是上述各种弹性材料或其他材料及其组合，申请人在此不一一列举，但都不脱离本申请的保护范围。
所述芯杆2上的通孔21的远端2-1与所述吸抓头1的近端1-2的连接是气密性连接。这种气密性连接，保证负压吸引过程中不会产生气体的泄露，一方面能快速形成负压吸引力，另一方面如在腔镜手术中使用，可以尽量减少气腹中气体的泄露。
参考图2至图3-7，本实施例中，所述无创吸钳900含开关3和手柄4。所述手柄4连接在所述芯杆2的近端2-2上，所述手柄4的尾部设有负压接口22，所述负压源7经所述负压接口22和所述通孔21连通。所述开关3安装在所述手柄4上。所述开关3能控制 所述通孔21的负压状态，从而控制所述吸抓头1处于吸附状态或松弛状态。所述手柄4能让临床医生方便地握持，使用过程中更加舒适。
参考图2-2至图2-7和图3-2至图3-7，所述开关3设有负压吸引、负压保持、负压卸除3种状态；通过调节所述无创吸钳900的开关3，可以使得所述芯杆2上的通孔21及与其相连接的所述吸抓头1分别处于负压吸引、负压保持、负压卸除3种状态。三种状态的设计，可以保证所述无创吸钳900在工作过程中其负压吸引保持在一个恒定的状态，不会由于持续的吸引而吸引力过大，造成所述组织或器官8的意外损伤，也不会由于负压解除而造成所述吸抓头1从所述组织或器官8表面脱落。
所述开关3安装在所述手柄4上，临床使用过程中，临床医生操作时可以直接在所述手柄4上操控所述开关3，实现单手操作，而且不需要单独的工作人员对所述负压源7进行开启或闭合，临床使用更加方便。
本实施例中，所述无创吸钳900采用医用材料制造。医用材料的设计可以更好地满足临床生物相容性的要求。
临床使用时，以肺部开放手术为例，首先将所述开关3置于负压保持状态，将所述吸抓头1置入手术区域内，然后将所述开关3置于负压吸引状态，开启所述负压源7，所述吸抓头1吸附在肺部表面，待所述吸抓头1能带动肺叶进行移动和翻动时，将所述开关3置于负压保持状态，此时进行各种手术动作，手术完成后，将所述开关3置于负压解除状态，此时负压解除，所述吸抓头1从肺叶表面脱离，即可将本发明之无创吸钳900从体内取出。
本实施例中，因所述吸抓头1采取了弹性吸抓头101的设计，所述弹性吸抓头101的工作面1-11与所述组织或器官8表面形成均匀的柔软的面接触，大大降低了局部接触部位的压强，不容易造成接触部位的意外损伤，在所述组织或器官8的抓取、移动、翻动等过程中可以最大限度地避免组织过器官的意外损伤。而且所述开关3，可以使得所述芯杆2上的通孔21及与其相连接的所述吸抓头1分别处于负压吸引、负压保持、负压卸除3种状态，可以保证所述无创吸钳900在工作过程中其负压吸引保持在一个恒定的状态，不会由于持续的吸引而吸引力过大，造成所述组织或器官8的意外损伤，也不会由于负压解除而造成所述吸抓头1从所述组织或器官8表面脱落，临床过程更加安全。
实施例2、含套管收拢装置的本发明之无创吸钳
参考图4至图4-8，本实施例与实施例1的区别在于，本实施例中，所述无创吸钳900还含收拢机构5。
参考图4和图4-1，所述收拢机构5，能压缩所述吸抓头1，并释放所述吸抓头1，所 述收拢机构5设在所述吸抓头1的外侧。所述收拢机构5能将所述吸抓头1压缩、收拢，从而通过穿刺器鞘管等手术通道，并能在所述吸抓头1进入腹腔后释放所述吸抓头1。所述收拢机构5的设计尤其适合于腔镜微创手术过程中所述吸抓头1的置入。
本实施例中，所述收拢机构5是套在所述芯杆2外的套管51。
参考图4-4、图4-5、图4-6和图4-8，所述套管51和所述芯杆2之间设有密封机构6，所述密封装置6能保证操作过程中腹腔中的气体不发生泄露，保证气腹的稳定性。
本实施例中，所述密封机构6是密封圈61。实际应用中，本领域的技术人员可以根据需要设计出各种结构的密封装置，申请人在此不一一列举，但都不脱离本申请的保护范围。
所述套管51的设计，只需将所述套管51向前推动即可将所述吸抓头1收入套管内，将所述吸抓头1经手术通道置入体内后再将所述套管51向后拉动，即可释放所述吸抓头1，而且可以根据需要反复收拢或释放，临床使用中操作非常简单。
参考图4至图4-2，以经腔镜肾脏手术为例，临床使用时，首先将所述吸抓头1收拢到所述套管51内，将所述开关3置于负压保持状态，将所述无创吸钳900的所述吸抓头1经穿刺器鞘管置入腹腔内，然后向后退所述套管51，释放所述吸抓头1，然后将所述开关3置于负压吸引状态，开启所述负压源7，所述吸抓头1吸附在肾脏表面，待所述吸抓头1能带动肾脏进行移动和翻动时，将所述开关3置于负压保持状态，此时进行肾脏各种手术，手术完成后，将所述开关3置于负压解除状态，此时负压解除，所述吸抓头1从肾脏表面脱离，向前推动所述套管51，将所述吸抓头1收拢到所述套管51内，即可将本发明之无创吸钳900经穿刺器鞘管取出。
本实施例与实施例1相比，由于设有所述套管51，可以非常方便地将所述吸抓头1从穿刺器鞘管等手术通道中置入体内，尤其适合于微创腔镜外科手术中使用。
实施例3、含绑线式收拢机构的本发明之无创吸钳
参考图7至图7-2，本实施例与实施例2的区别在于，本实施例中，所述收拢机构5是是捆绑所述吸抓头1的捆扎线52。
参考图7和图7-1，所述捆扎线52捆扎在所述吸抓头1的外侧将所述吸抓头收拢。
仍以经腔镜肾脏手术为例，临床使用时，用所述捆扎线52的远端将所述吸抓头1捆绑收拢，将所述开关3置于负压保持状态，然后将所述吸抓头1经穿刺器鞘管置入腹腔内，然后拉动留存在体外的所述捆扎线52的拉环52-1，所述捆扎线52松开，所述吸抓头1展开，参考图7-2，释放所述吸抓头1，然后将所述开关3置于负压吸引状态，开启所述负压源7，所述吸抓头1吸附在肾脏表面，待所述吸抓头1能带动肾脏进行移动和翻动时，将所述开关3置于负压保持状态，此时进行肾脏各种手术，手术完成后，将所述开关3置于负压解除状态，此时负压解除，所述吸抓头1从肾脏表面脱离，在将所述吸抓头1向体外 拉出的过程中，由于所述吸抓头1是近端小远端大的旋转体结构，可以非常容易地一边收拢一边从穿刺器鞘管中拉出体外。
本实施例与实施例2相比，捆扎线的设计，在所述吸抓头1进入体内前预先通过所述捆扎线52将所述吸抓头1收拢，进入体内后只需拉动所述捆扎线52即可释放所述吸抓头1，操作简单而且制造成本更低。
应该注意，本文中公开和说明的结构可以用其它效果相同的结构代替，同时本发明所介绍的实施例并非实现本发明的唯一结构。虽然本发明的优先实施例已在本文中予以介绍和说明，但本领域内的技术人员都清楚知道这些实施例不过是举例说明而己，本领域内的技术人员可以做出无数的变化、改进和代替，而不会脱离本发明，因此，应按照本发明所附的权利要求书的精神和范围来的界定本发明的保护范围。

Claims (23)

  1. 无创吸钳，其特征在于：所述无创吸钳(900)含吸抓头(1)及芯杆(2)；所述吸抓头(1)设在所述芯杆(2)的前端；所述芯杆(2)上设通孔(21)，所述通孔(21)的远端(2-1)与所述吸抓头(1)的近端(1-2)相连接，所述通孔(21)的近端(2-1)与所述负压源(7)相连接。
  2. 根据权利要求1所述无创吸钳，其特征在于：所述吸抓头(1)为弹性吸抓头(101)。
  3. 根据权利要求1所述无创吸钳，其特征在于：所述吸抓头(1)上设有加强筋(11)。
  4. 根据权利要求3所述无创吸钳，其特征在于：所述吸抓头(1)的加强筋(11)是放射状结构。
  5. 根据权利要求3所述无创吸钳，其特征在于：所述吸抓头(1)的加强筋(11)是螺旋放射状结构。
  6. 根据权利要求1所述无创吸钳，其特征在于：所述吸抓头(1)的壁厚是非等厚
  7. 根据权利要求6所述无创吸钳，其特征在于：所述吸抓头(1)的壁厚在近端(1-2)厚，在所述远端(1-1)薄。
  8. 根据权利要求1所述无创吸钳，其特征在于：所述芯杆(2)上的通孔(21)的远端(2-1)与所述吸抓头(1)的近端(1-2)的连接是气密性连接。
  9. 根据权利要求1所述无创吸钳，其特征在于：所述无创吸钳(900)设有开关(3)，能控制所述芯杆(2)的通孔(21)的负压状态的所述开关(3)设在所述芯杆(2)的近端(2-2)上。
  10. 据权利要求1所述无创吸钳，其特征在于：所述无创吸钳(900)设有手柄(4)，所述手柄(4)连接在所述芯杆(2)的近端(2-2)上。
  11. 根据权利要求10所述无创吸钳，其特征在于：所述手柄(4)上安装有所述开关(3)。
  12. 根据权利要求1所述无创吸钳，其特征在于：所述无创吸钳(900)设有收拢机构(5)，能压缩所述吸抓头(1)，并释放所述吸抓头(1)的所述收拢机构(5)设在所述吸抓头(1)的外侧。
  13. 根据权利要求12述无创吸钳，其特征在于：所述收拢机构(5)是套在所述芯杆(2)的套管(51)。
  14. 根据权利要求12述无创吸钳，其特征在于：所述收拢机构(5)是捆绑所述吸 抓头(1)的捆扎线。
  15. 根据权利要求1所述无创吸钳，其特征在于：所述吸抓头(1)呈喇叭口型结构。
  16. 根据权利要求1所述无创吸钳，其特征在于：所述吸抓头(1)采用旋转体结构。
  17. 根据权利要求16述无创吸钳，其特征在于：所述吸抓头(1)采用近端小远端大的旋转体结构。
  18. 根据权利要求10述无创吸钳，其特征在于：所述无创吸钳(900)的开关(3)设有负压吸引、负压保持、负压卸除3种状态；通过调节所述无创吸钳(900)的开关(3)，可以使得所述芯杆(2)上的通孔(21)及与其相连接的所述吸抓头(1)分别处于负压吸引、负压保持、负压卸除3种状态。
  19. 根据权利要求3所述无创吸钳，其特征在于：所述吸抓头(1)的加强筋(11)采用医用弹性金属材料或医用弹性高分子材料制造。
  20. 根据权利要求19述无创吸钳，其特征在于：制造所述加强筋(11)选自：医用弹性不锈钢、钛镍形状记忆合金、弹性尼龙丝。
  21. 据权利要求1所述无创吸钳，其特征在于：所述吸抓头(1)采用医用弹性材料制造。
  22. 根据权利要求1所述无创吸钳，其特征在于：所述吸抓头(1)医用弹性材料选自：医用硅胶、医用橡胶、医用聚氨酯、医用聚乙烯、医用尼龙、医用聚丙烯及其组合。
  23. 根据权利要求1所述无创吸钳，其特征在于：所述无创吸钳(900)采用医用材料制造。
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CN108742881A (zh) * 2018-06-15 2018-11-06 中国医学科学院北京协和医院 一种肿瘤负压吸附装置及其应用
CN108703794A (zh) * 2018-06-22 2018-10-26 广东弘和医疗器械制造有限公司 腹腔肿瘤碎吸装置及方法

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