CN211583357U - Noninvasive suction forceps - Google Patents

Abstract

The non-invasive suction forceps of the utility model comprises a suction head and a core rod. The suction and grabbing head can be connected with a negative pressure source through the through hole of the core rod, and can suck tissues or organs under the negative pressure suction action of the negative pressure source, and the actions of moving, turning and the like of the tissues are realized. The suction and grabbing head forms uniform surface contact with the surface of the tissue or organ, so that the pressure of a local contact part is reduced, the accidental damage of the contact part is not easy to cause, and the tissue or organ is safer in the processes of grabbing, moving, turning and the like. The utility model discloses a noninvasive suction tongs still contains draws in the mechanism in, draws in the mechanism in and can will inhale the head of grabbing compression, draw in to through operation passageways such as puncture ware sheath pipe, and can inhale the head of grabbing after inhaling the head entering abdominal cavity release, especially be suitable for the putting into of the head of grabbing of inhaling among the laparoscopic minimal access surgery process.

Description

Non-invasive suction forceps

technical field

The utility model relates to a medical device, in particular to a non-invasive suction forceps device used for non-invasively grasping soft tissue.

Background technique

In clinical operations, especially with the development of minimally invasive endoscopic surgery, tissue or specimens often need to be grasped and moved during the operation, and the tissue or specimen cannot be damaged during the grasping and moving process. For example, in surgical operations such as kidney, liver, lung, uterus, and ovarian cyst, because the organs or tissues such as kidney, liver, lung, uterus, and ovarian cyst are relatively fragile, during the grasping and moving process, if the control is not good, it will be very difficult. It is easy to cause accidental damage to organs or tissues or leakage of tissue fluid.

Especially for cystic tumors, it is necessary to pay more attention when removing the resected tumor, because once the tumor cyst is accidentally damaged, it is very easy to cause the seeding and metastasis of cancer cells, and the consequences will be very serious.

In the existing clinical operations, the instruments used for grasping and moving tissue or specimens are usually forceps, forceps and other instruments. This operation method usually produces a small local contact site that contacts first. The parts where the instrument and the tissue come into contact are usually rigid parts. Therefore, during clinical use, it is very easy to cause excessive local pressure at the first contact part, which may cause accidental tissue damage or rupture of tumors or cysts. Therefore, there is a need for improvements to the prior art.

The purpose of the utility model is to design a non-invasive suction forceps, which is used for grasping and moving easily damaged tissues or organs during clinical operation.

SUMMARY OF THE INVENTION

The purpose of the present utility model is to invent a non-invasive suction forceps, by applying a uniform negative pressure attraction to the contact surface of the grasping tissue, so as to ensure that the grasping surface in contact with the grasping surface is uniform in the process of grasping and moving the tissue or organ. Apply attraction to the surface of tissues or organs, so as to avoid accidental damage to tissues or organs, 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 and grasping head 1 and a core rod 2; the suction and grasping head 1 is arranged at the front end of the core rod 2; A through hole 21 is provided, the distal end 2-1 of the through hole of the through hole 21 is connected with the proximal end 1-2 of the suction and grasping head 1, and the proximal end 2-2 of the through hole of the through hole 21 is connected Connected to the negative pressure source 7 .

The suction 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 . The grasping head 1 applies a uniform negative pressure attractive force to the surface of the tissue or organ 8, which can suck the tissue or organ 8, and realize the movement, turning and other actions of the tissue. Because the suction head 1 is in surface contact with the surface of the tissue or organ 8, the pressure at the local contact site is greatly reduced, and it is not easy to cause accidental damage to the contact site. Safer during flipping, etc. And connect the negative pressure source 7, the suction and grasping head 1 attracts and grasps the tissue or organ 8, disconnects the negative pressure source 7, the suction and grasping head 1 relaxes, the tissue or organ 8. Disengage the suction head, the use process is very convenient.

Further, the suction head 1 is an elastic suction head 101 . Especially when the working surface 1-11 of the elastic suction head 101 is made of flexible materials, the working surface 1-11 can be softly fitted on the surface of the tissue or organ 8 during the suction and grasping process. , the force exerted during the suction and grasping process is softer, and it is less likely to cause accidental damage to the tissue or organ 8 .

The suction head 1 is provided with reinforcing ribs 11 . The design of the reinforcing rib 11 can make the distal end 1-1 of the suction and grasping head to be grasped by the suction and grasping head 1 can be easily opened, and the clinical use process is more convenient.

The reinforcing ribs 11 of the suction head 1 are radial structures. This umbrella-like radial structure design can make the distal end 1-1 of the suction head 1 evenly spread radially. The working surface 1-11 can better fit the tissue, and at the same time, the suction and grasping head 1 can be easily folded.

The reinforcing rib 11 of the suction head 1 is a helical radial structure. The design of the helical radial structure can provide better support for the suction head 1 while ensuring that the working surface 1-11 of the distal end 1-1 of the suction head 1 is evenly spread out , the crawling process is more reliable. At the same time, when the suction and grasping 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 head 1 is unequal.

The wall thickness of the suction head 1 is 1-2 thick at the proximal end of the suction head and 1-1 thinner at the distal end of the suction head. This design of thick proximal end and thin distal end not only ensures the grasping effect of the distal end gently fitting the tissue, but also provides good support for the suction and grasping head 1, and the grasping process is safer.

The connection between the distal end 2-1 of the through hole of the through hole 21 on the core rod 2 and the proximal end 1-2 of the suction and grasping head 1 is an air-tight 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 leakage of gas in the pneumoperitoneum during the minimally invasive process of laparoscopy. .

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 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 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 of the core rod 2 . The handle 4 can be conveniently held by a clinician and is more comfortable during use.

The switch 3 is mounted on the handle 4 . The switch 3 is installed on the handle 4. During clinical use, the clinician can directly control the switch 3 on the handle 4 to realize one-handed operation, and does not require a separate staff to check the switch 3. The negative pressure source 7 is opened or closed, which is more convenient for clinical use.

The non-invasive suction forceps 900 is provided with a retraction mechanism 5 , which can compress the suction head 1 and release the suction head 1 . The retraction mechanism 5 is provided on the outside of the suction head 1 . The retraction mechanism 5 can compress and retract the suction head 1 to pass through a surgical channel such as a trocar sheath, and can release the suction head 1 after the suction head 1 enters the abdominal cavity. The design of the retracting mechanism 5 is especially suitable for the placement of the suction and grasping head 1 during the endoscopic minimally invasive surgery.

The folding mechanism 5 is a sleeve 51 which is sheathed on the core rod 2 . In the design of the sleeve 51, the suction and grasping head 1 can be put into the sleeve only by pushing the sleeve 51 forward, and the suction and grasping head 1 is placed into the body through the surgical channel, and then the suction and grasping head 1 is placed in the body. The suction and grasping head 1 can be released by pulling the sleeve 51 backwards, and can be repeatedly folded or released as required, and the operation in clinical use is very simple. 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, thereby ensuring the stability of the pneumoperitoneum.

The folding mechanism 5 is a binding wire 52 for binding the suction head 1 . The design of the binding wire, the suction and grasping head 1 is pre-folded by the binding wire 52 before the suction and grasping head 1 enters the body, and the suction and grasping head can be released by simply pulling the binding wire 52 after entering the body. 1. Simple operation and lower manufacturing cost.

The suction head 1 has a bell mouth structure. The bell-shaped structure design can better ensure that the working surfaces 1-11 of the suction and grasping 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 head 1 adopts a rotating body structure. The design of the rotating body structure can make the suction head 1 evenly folded and unfolded.

The suction and grasping head 1 adopts a rotating body structure with a small proximal end and a large distal end. Such a structure of a rotating body with a small proximal end and a large distal end is particularly convenient for closing and opening the suction head 1 with a large size.

The switch 3 of the non-invasive suction forceps 900 has three states of negative pressure suction, negative pressure holding, and negative pressure release; by adjusting the switch 3 of the non-invasive suction forceps 900, the through holes on the core rod 2 can be made 21 and the suction and grasping head 1 connected thereto are respectively in three states of negative pressure suction, negative pressure maintaining, and negative pressure releasing. The design of three states can ensure that the negative pressure suction of the non-invasive suction forceps 900 is maintained in a constant state during the working process, and the suction force will not be too large due to continuous suction, causing accidents to the tissue or organ 8 The suction head 1 will not fall off from the surface of the tissue or organ 8 due to the removal of negative pressure.

The applicant only introduces the structure of the above-mentioned rotating body in detail. In practical application, those skilled in the art can design different structures of the suction and grasping head according to the needs, without departing from the protection scope of the present application.

The reinforcing rib 11 of the suction head 1 is made of medical elastic metal material or medical elastic polymer material.

The reinforcing rib 11 is made from: medical elastic stainless steel, titanium-nickel shape memory alloy, elastic nylon wire. The reinforcing rib 11 designed with titanium-nickel shape memory alloy material can be prefabricated into a small-diameter columnar structure in vitro. After entering the human body, it is automatically unfolded under the action of body temperature, so as to realize the suction and grasping head 1 in the body. Automatically expand.

The reinforcing rib 11 may be the above-mentioned various elastic materials or other materials and combinations thereof, which the applicant does not list here, but do not depart from the protection scope of the present application.

The suction and grasping head 1 is made of medical elastic material.

The medical elastic material of the suction head 1 is selected from: medical silicone, medical rubber, medical polyurethane, medical polyethylene, medical nylon, medical polypropylene and combinations thereof.

The suction head 1 can be made of the above-mentioned various elastic materials or other materials and combinations thereof. The applicant does not list them one by one, but does not depart from the protection scope of the present application.

The non-invasive suction forceps 900 are made of medical materials. The design of medical materials can better meet the requirements of clinical biocompatibility.

Taking translaparoscopic kidney surgery as an example, in clinical use, firstly, the suction and grasping head 1 is retracted into the sleeve 51, the switch 3 is placed in a negative pressure holding state, and the non-invasive suction forceps 900 are closed. The suction and grasping head 1 is placed into the abdominal cavity through the trocar sheath, and then the sleeve 51 is retracted to release the suction and grasping head 1, and then the switch 3 is placed in a negative pressure suction state, and the negative pressure is turned on. Pressure source 7, the suction and grasping head 1 is adsorbed on the surface of the kidney, 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 detached from the kidney surface, and the non-invasive suction forceps 900 of the present invention can be taken out from the body.

The non-invasive suction pliers of the present utility model include a suction grasping head 1 and a core rod 2 . The suction head 1 can be connected with the negative pressure source 7 through the through hole 21 of the core rod 21. Under the suction effect of the negative pressure source 7, the suction head 1 can The tissue or organ 8 is sucked, and the movement, turning and other actions of the tissue are realized. Because the suction head 1 forms a uniform surface contact with the surface of the tissue or organ 8, the pressure at the local contact site is greatly reduced, and it is not easy to cause accidental damage to the contact site. Safer when moving, flipping, etc. In addition, the switch 3 can make the through hole 21 on the core rod 2 and the suction head 1 connected to it in three states of negative pressure suction, negative pressure maintenance, and negative pressure release respectively, which can ensure that all the The negative pressure suction of the non-invasive suction forceps 900 is kept 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 and grasping head 1, so as to pass through surgical channels such as a trocar sheath and enter the suction and grasping head 1. The suction and grasping head 1 is released after the abdominal cavity, which is especially suitable for the placement of the suction and grasping head 1 during minimally invasive endoscopic surgery.

Description of drawings

FIG. 1 is a schematic three-dimensional structure 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 .

1-2 is a front view of FIG. 1 .

1-3 is a cross-sectional view taken along line A-A of FIG. 1-2.

Fig. 1-4 is an enlarged view of B of Fig. 1-3.

FIG. 2 is a schematic three-dimensional structure diagram of the non-invasive suction forceps of the present invention with a switch.

FIG. 2-1 is a schematic diagram of the working principle of FIG. 2 .

FIG. 2-2 is a top view of the switch of FIG. 2 in a negative pressure suction state.

Fig. 2-3 is a cross-sectional view taken along the line C-C of Fig. 2-2, showing a schematic structural diagram of the switch when the switch is in a negative pressure attraction state.

2-4 are top views of the switch of FIG. 2 in a negative pressure holding state.

Fig. 2-5 is a D-D sectional view of Fig. 2-4, showing a schematic structural diagram of the switch when the switch is in a negative pressure holding state.

2-6 are top views of the switch of FIG. 2 in a negative pressure release state.

Fig. 2-7 is a cross-sectional view taken along the line E-E of Fig. 2-6, showing a schematic structural diagram of the switch when the negative pressure is released.

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 when it is in a negative pressure suction state.

Fig. 3-3 is a sectional view taken along the line F-F of Fig. 3-2, showing a schematic structural diagram of the switch when the switch is in a negative pressure suction state.

3-4 are top views of the switch of FIG. 3 in a negative pressure holding state.

Fig. 3-5 is a G-G sectional view of Fig. 3-4, showing a schematic structural diagram of the switch when the switch is in a negative pressure holding state.

3-6 are top views of the switch of FIG. 3 in a negative pressure release state.

Fig. 3-7 is a cross-sectional view of Fig. 3-6 along H-H, showing a schematic structural diagram of the switch when the negative pressure is released.

4 is a schematic three-dimensional structural diagram of the non-invasive suction forceps of the present invention with a sleeve-type retracting mechanism.

FIG. 4-1 is a schematic structural diagram of the suction head of FIG. 4 when it is released.

Figure 4-2 is the working principle diagram of Figure 4-1.

Fig. 4-3 is a front view of Fig. 4-1.

Figure 4-4 is a cross-sectional view taken along line I-I of Figure 4-3.

Fig. 4-5 is an enlarged view of the point J of Fig. 4-4.

4-6 are front views of FIG. 4 .

Figures 4-7 are cross-sectional views taken along lines K-K of Figures 4-6.

Fig. 4-8 is an enlarged view of L in Fig. 4-7.

FIG. 5 is a schematic structural diagram of the non-invasive suction forceps of the present invention with reinforcing ribs.

FIG. 5-1 is an enlarged view of M in FIG. 5 .

FIG. 6 is a schematic structural diagram of the non-invasive suction forceps of the present invention using elastic wire mesh as a reinforcing rib.

FIG. 7 is a schematic structural diagram of the non-invasive suction forceps of the present invention with a binding wire-type retracting mechanism.

FIG. 7-1 is an enlarged view of N in FIG. 7 .

FIG. 7-2 is a schematic structural diagram of the suction head of FIG. 7 when it is released.

In the above picture:

101 is the elastic suction and grasping head, and 900 is the non-invasive suction forceps of the present invention.

1 is the suction head, 2 is the core rod, 3 is the switch, 4 is the handle, 5 is the closing device, 6 is the sealing device, 7 is the negative pressure source, and 8 is the tissue or organ.

11 is the reinforcing rib, 1-1 is the distal end of the suction head, 1-2 is the proximal end of the suction head, and 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 through hole, and 2-2 is the proximal end of the through hole.

51 is a sleeve, 52 is a binding wire, and 52-1 is a pull ring.

61 is a sealing ring.

Detailed ways

Example 1: Non-invasive suction forceps of the present invention

Referring to FIGS. 1 to 1-4 , the non-invasive suction forceps of this embodiment includes a suction grasping head 1 and a core rod 2 .

The suction 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 of the through hole 21 and the suction grasp of the suction head 1 The proximal end 1-2 of the head is connected, and the proximal end 2-2 of the through hole 21 is connected with the negative pressure source 7 .

In this embodiment, the suction head 1 is an elastic suction head 101 . The working surfaces 1-11 of the elastic suction and grasping head 101 are made of flexible materials. During the suction and grasping process, the working surfaces 1-11 can be softly attached to the surface of the tissue or organ 8, and the suction and grasping process is performed. The force applied during the process is softer and less likely to cause accidental damage to the tissue or organ 8 .

Of course, in practical applications, the suction head 1 can also be designed with a rigid structure, and the applicant does not give specific examples here, but it does not deviate from the protection scope of the present application.

Referring to FIG. 2 , FIG. 3 , FIG. 5 and FIG. 5-1 , the suction 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 and grasping head to be grasped by the suction and grasping head 1 can be easily opened, and the clinical use process is more convenient.

In this embodiment, the reinforcing ribs 11 of the suction head 1 are radial structures. This umbrella-like radial structure design enables the distal end 1-1 of the suction head 1 to be evenly spread radially. During the grasping process, the distal end 1-1 of the suction head The working surface 1-11 can better fit the tissue, and at the same time, the suction and grasping head 1 can be easily folded.

Of course, in practical applications, the reinforcing rib 11 of the suction head 1 can also be designed into various other structures, for example, the reinforcing rib 11 of the suction head 1 can be a helical radial structure. The design of the helical radial structure can provide better support for the suction head 1 while ensuring that the working surface 1-11 of the distal end 1-1 of the suction head 1 is evenly spread out , the crawling process is more reliable. At the same time, when the suction and grasping head 1 is folded, it can be folded along the spiral structure, and the folding process is very smooth. However, the above-mentioned various structural designs do not depart from the protection scope of the present application.

The reinforcing rib 11 of the suction head 1 is made of medical elastic metal material or medical elastic polymer material.

The material for manufacturing the reinforcing rib 11 can be various materials such as medical elastic stainless steel, titanium-nickel shape memory alloy, elastic nylon wire and the like. The reinforcing rib 11 of the titanium-nickel shape memory alloy mesh can be prefabricated into a small-diameter columnar structure in vitro. After entering the human body, the suction and grasping head 1 is automatically unfolded in the body under the action of body temperature. Refer to FIG. 6 . .

The reinforcing rib 11 may be the above-mentioned various elastic materials or other materials and combinations thereof, which the applicant does not list here, but do not depart from the protection scope of the present application.

Referring to FIGS. 1-3 and 1-4 , the wall thickness of the suction head 1 is unequal.

The wall thickness of the suction head 1 is 1-2 thick at the proximal end of the suction head and 1-1 thinner at the distal end of the suction head. This design of thick proximal end and thin distal end not only ensures the grasping effect of the distal end gently fitting the tissue, but also provides good support for the suction and grasping head 1, and the grasping process is safer.

Referring to FIGS. 1 to 1-4 , in this embodiment, the suction and grasping head 1 has a bell-shaped structure. The bell-shaped structure design can better ensure that the working surfaces 1-11 of the suction and grasping 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.

In practical applications, those skilled in the art can design various structures of the suction head 1 as required. For example, the suction head 1 can adopt a rotating body structure with a small proximal end and a large distal end to facilitate The folding and unfolding of the suction head 1 is described. The applicant does not give specific examples here, but it does not deviate from the scope of the claims of the present application.

The suction and grasping head 1 is made of medical elastic material.

The medical elastic material of the suction head 1 is selected from: medical silicone, medical rubber, medical polyurethane, medical polyethylene, medical nylon, medical polypropylene and combinations thereof.

The suction head 1 can be made of the above-mentioned various elastic materials or other materials and combinations thereof. The applicant does not list them one by one, but does not depart from the protection scope of the present application.

The connection between the distal end 2-1 of the through hole of the through hole 21 on the core rod 2 and the proximal end 1-2 of the suction and grasping head 1 is an air-tight 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, if it is used in laparoscopic surgery, it can minimize the leakage of gas in the pneumoperitoneum. .

Referring to FIGS. 2 to 3-7 , in this embodiment, the non-invasive suction forceps 900 includes a switch 3 and a handle 4 . The handle 4 is connected to the proximal end of the core rod 2 , and a negative pressure interface 22 is provided at the tail of the handle 4 , and the negative pressure source 7 communicates with the through hole 21 through the negative pressure interface 22 . The switch 3 is mounted on the handle 4 . The switch 3 can control the negative pressure state of the through hole 21 , so as to control the suction head 1 to be in a suction state or a relaxed state. The handle 4 can be conveniently held by a clinician and is more comfortable during use.

Referring to Fig. 2-2 to Fig. 2-7 and Fig. 3-2 to Fig. 3-7, the switch 3 has 3 states of negative pressure suction, negative pressure holding, and negative pressure releasing; 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 grasping head 1 connected to it in three states of negative pressure suction, negative pressure holding, and negative pressure releasing respectively. The design of three states can ensure that the negative pressure suction of the non-invasive suction forceps 900 is maintained in a constant state during the working process, and the suction force will not be too large due to continuous suction, causing accidents to the tissue or organ 8 The suction head 1 will not fall off from the surface of the tissue or organ 8 due to the removal of 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 to realize one-handed operation, and does not require a separate staff to check the switch 3. The negative pressure source 7 is opened or closed, which is more convenient for clinical use.

In this embodiment, the non-invasive suction forceps 900 is made of medical materials. The design of medical materials can better meet the requirements of clinical biocompatibility.

In clinical use, taking open lung surgery as an example, first place the switch 3 in a negative pressure holding state, place the suction and grasping head 1 in the operation area, and then place the switch 3 in a negative pressure suction state. , turn on the negative pressure source 7, the suction head 1 is adsorbed on the surface of the lung, when the suction head 1 can drive the lung lobes to move and turn, the switch 3 is placed in a negative pressure holding state, this 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 and grasping head 1 is separated from the surface of the lung lobe, and the non-invasive suction forceps of the present invention can be removed. 900 removed from the body.

In this embodiment, because the suction head 1 adopts the design of the elastic suction head 101, the working surfaces 1-11 of the elastic suction head 101 form a uniform and soft surface contact with the surface of the tissue or organ 8 , greatly reduces the pressure at the local contact part, and is not easy to cause accidental damage to the contact part, and can avoid accidental damage to the tissue or organ during the process of grasping, moving, and flipping the tissue or organ 8 to the greatest extent. In addition, the switch 3 can make the through hole 21 on the core rod 2 and the suction head 1 connected to it in three states of negative pressure suction, negative pressure maintenance, and negative pressure release respectively, which can ensure that all The negative pressure suction of the non-invasive suction forceps 900 is maintained in a constant state during the working process, and the suction force will not be too large due to continuous suction, causing accidental damage to the tissue or organ 8, and will not be released due to 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.

Example 2. The non-invasive suction forceps of the present invention with a sleeve retracting device

Referring to FIGS. 4 to 4-8 , the difference between this embodiment and Embodiment 1 is that, in this embodiment, the non-invasive suction forceps 900 further includes a retracting mechanism 5 .

Referring to FIG. 4 and FIG. 4-1 , the folding mechanism 5 can compress the suction head 1 and release the suction head 1 , and the folding mechanism 5 is provided on the outer side of the suction head 1 . The retraction mechanism 5 can compress and retract the suction head 1 to pass through a surgical channel such as a trocar sheath, and can release the suction head 1 after the suction head 1 enters the abdominal cavity. The design of the retracting mechanism 5 is especially suitable for the placement of the suction and grasping head 1 during the endoscopic minimally invasive surgery.

In this embodiment, the folding mechanism 5 is a sleeve 51 that is sheathed outside the core rod 2 .

Referring to Figures 4-4, 4-5, 4-6 and 4-8, a sealing mechanism 6 is provided between the sleeve 51 and the core rod 2, and the sealing device 6 can ensure that during the operation The gas in the abdominal cavity does not leak, ensuring the stability of the pneumoperitoneum.

In this embodiment, the sealing mechanism 6 is a sealing ring 61 . In practical applications, those skilled in the art can design sealing devices with various structures as required.

In the design of the sleeve 51, the suction and grasping head 1 can be put into the sleeve only by pushing the sleeve 51 forward, and the suction and grasping head 1 is placed into the body through the surgical channel, and then the suction and grasping head 1 is placed in the body. The suction and grasping head 1 can be released by pulling the sleeve 51 backwards, and can be repeatedly folded or released as required, and the operation in clinical use is very simple.

Referring to Figure 4 to Figure 4-2, taking translaparoscopic kidney surgery as an example, in clinical use, firstly, the suction and grasping head 1 is retracted into the sleeve 51, and the switch 3 is placed in a negative pressure holding state. , the suction and grasping head 1 of the non-invasive suction forceps 900 is inserted into the abdominal cavity through the trocar sheath, and then the cannula 51 is retracted to release the suction and grasping head 1, and then the switch 3 is placed on In the negative pressure suction state, the negative pressure source 7 is turned on, and the suction and grasping head 1 is adsorbed on the surface of the kidney. When the suction and grasping head 1 can drive the kidney to move and turn, the switch 3 is placed in the negative pressure to keep At this time, various kidney operations are performed. 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 and grasping head 1 is detached from the kidney surface and pushes the cannula forward. 51. The suction and grasping head 1 is retracted into the cannula 51, and the non-invasive suction forceps 900 of the present invention can be taken out through the trocar sheath.

Compared with Embodiment 1, this embodiment is provided with the sleeve 51 , so that 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 wire-binding type retracting mechanism

Referring to FIGS. 7 to 7-2 , the difference between this embodiment and Embodiment 2 is that, in this embodiment, the folding mechanism 5 is a binding wire 52 for binding the suction head 1 .

Referring to FIG. 7 and FIG. 7-1 , the binding wire 52 is bundled on the outside of the suction head 1 to gather the suction head.

Still taking laparoscopic kidney surgery as an example, in clinical use, the suction and grasping head 1 is bundled and closed with the distal end of the binding wire 52, the switch 3 is placed in a negative pressure holding state, and then the suction and grasping head 1 is placed in a negative pressure state. The grasping head 1 is placed in the abdominal cavity through the trocar sheath, and then the pull ring 52-1 of the binding wire 52 left in the body is pulled, the binding wire 52 is loosened, and the suction and grasping head 1 is unfolded, referring to FIG. 7 . -2, release the suction head 1, then put the switch 3 in the negative pressure suction state, turn on the negative pressure source 7, the suction head 1 is adsorbed on the kidney surface, wait for the suction head 1 When the kidney can be moved and turned, 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 a negative pressure release state, and the negative pressure is released at this time. , the suction head 1 is detached from the kidney surface. During the process of pulling the suction head 1 out of the body, since the suction head 1 is a rotating body structure with a small proximal end and a large distal end, it can be easily Pull it out of the trocar sheath while closing it.

Compared with the second embodiment, the design of the binding wire in this embodiment is that the suction and grasping head 1 is pre-folded through the binding wire 52 before the suction and grasping head 1 enters the body, and after entering the body, it is only necessary to pull the binding The suction head 1 can be released by the wire 52, which is easy to operate and less expensive to manufacture.

It should be noted that the structures disclosed and described herein can be replaced by other structures with the same effect, and the embodiments introduced in the present invention are not the only structures for realizing the present invention. Although preferred embodiments of the present invention have been described and illustrated herein, those skilled in the art will appreciate that these embodiments are merely illustrative and that numerous changes, Improvements and substitutions can be made without departing from the present utility model. Therefore, the protection scope of the present utility model should be defined in accordance with the spirit and scope of the appended claims of the present utility model.

Claims (23)

1. Non-invasive suction forceps, characterized in that: the non-invasive suction forceps (900) contain a suction grasping head (1) and a core rod (2); the suction grasping head (1) is arranged on the side of the core rod (2). The front end; the core rod (2) is provided with a through hole (21), the through hole distal end (2-1) of the through hole (21) and the suction head proximal end ( 1-2) is connected, and the through hole proximal end (2-2) of the through hole (21) is connected with the negative pressure source (7). 2. The non-invasive suction forceps according to claim 1, wherein the suction and grasping head (1) is an elastic suction and grasping head (101). 3 . The non-invasive suction forceps according to claim 1 , wherein a reinforcing rib ( 11 ) is provided on the suction and grasping head ( 1 ). 4 . 4 . The non-invasive suction forceps according to claim 3 , wherein the reinforcing ribs ( 11 ) of the suction and grasping head ( 1 ) are radial structures. 5 . 5 . The non-invasive suction forceps according to claim 3 , wherein the reinforcing ribs ( 11 ) of the suction and grasping head ( 1 ) are of a spiral radial structure. 6 . 6. The non-invasive suction forceps according to claim 1, wherein the wall thickness of the suction and grasping head (1) is unequal thickness. 7. The non-invasive suction forceps according to claim 6, wherein the wall thickness of the suction and grasping head (1) is thicker at the proximal end (1-2) of the suction and grasping head, and is thicker at the distal end (1-1) of the suction and grasping head. )Thin. 8. The non-invasive suction forceps according to claim 1, characterized in that: the distal end (2-1) of the through hole (2-1) of the through hole (21) on the core rod (2) and the suction and grasping head (1) The connection at the proximal end (1-2) of the suction head is a gas-tight connection. 9. The non-invasive suction forceps according to claim 1, characterized in that: the non-invasive suction forceps (900) are provided with a switch (3), which can control the negative pressure state of the through hole (21) of the core rod (2) The said switch (3) is arranged on the proximal end of the said core rod (2). 10. The non-invasive suction forceps according to claim 1, wherein the non-invasive suction forceps (900) is provided with a handle (4), and the handle (4) is connected to the proximal end of the core rod (2) . 11. The non-invasive suction forceps according to claim 10, wherein a switch (3) is installed on the handle (4). 12. The non-invasive suction forceps according to claim 1, characterized in that: the non-invasive suction forceps (900) are provided with a retracting mechanism (5), which can compress the suction and grasping head (1) and release the suction and grasping head The folding mechanism (5) of (1) is provided on the outer side of the suction head (1). 13 . The non-invasive suction forceps according to claim 12 , wherein the retracting mechanism ( 5 ) is a sleeve ( 51 ) sleeved on the core rod ( 2 ). 14 . 14. The non-invasive suction forceps according to claim 12, characterized in that: the folding mechanism (5) is a binding wire for binding the suction and grasping head (1). 15. The non-invasive suction forceps according to claim 1, wherein the suction and grasping head (1) has a bell-mouth structure. 16. The non-invasive suction forceps according to claim 1, wherein the suction and grasping head (1) adopts a rotating body structure. 17 . The non-invasive suction forceps according to claim 16 , wherein the suction and grasping head ( 1 ) adopts a rotating body structure with a small proximal end and a large distal end. 18 . 18. The non-invasive suction forceps according to claim 10, characterized in that: the switch (3) of the non-invasive suction forceps (900) is provided with three states of negative pressure suction, negative pressure maintenance, and negative pressure release; The switch (3) of the non-invasive suction forceps (900) can make the through hole (21) on the core rod (2) and the suction and grasping head (1) connected to it in negative pressure suction, negative pressure respectively There are 3 states of hold and negative pressure release. 19 . The non-invasive suction forceps according to claim 3 , wherein the reinforcing rib ( 11 ) of the suction and grasping head ( 1 ) is made of medical elastic metal material or medical elastic polymer material. 20 . 20 . The non-invasive suction forceps according to claim 19 , wherein the reinforcing ribs ( 11 ) are selected from the group consisting of: medical elastic stainless steel, titanium-nickel shape memory alloy, and elastic nylon wire. 21 . 21. The non-invasive suction forceps according to claim 1, wherein the suction and grasping head (1) is made of medical elastic material. 22. The non-invasive suction forceps according to claim 1, wherein the medical elastic material of the suction and grasping head (1) is selected from the group consisting of: medical silica gel, medical rubber, medical polyurethane, medical polyethylene, medical nylon, medical polypropylene and its combination. 23. The non-invasive suction forceps according to claim 1, wherein the non-invasive suction forceps (900) are made of medical materials.

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