Pressure control type endoscope anastomat

Abstract

A pressure control type endoscope anastomat comprises a nail bin assembly, a translation mechanism, a pressure measuring unit, a pressure adjusting mechanism and a cutting mechanism. The nail bin assembly is provided with a nail bin seat and a nail anvil; the translation mechanism is installed on the nail bin base and the nail anvil and used for controlling the nail bin base and the nail anvil to move close to or away from each other in a translational motion mode. The pressure measuring unit is installed in the nail bin assembly. The pressure regulating mechanism is arranged in an outer shell and is used for controlling the translation mechanism to execute corresponding actions according to the detected pressure data; the cutting mechanism is provided with a cutter pushing rod and a cutter connected to the front end of the cutter pushing rod, and the cutting mechanism cuts tissue into nails. According to the utility model, the pressure parameter of the tissue can be measured, the jaw gap can be accurately adjusted according to the optimal healing pressure, stable squeezing is carried out in the whole tissue anastomosis process, and the healing effect after tissue anastomosis is improved; and the translation mechanism is arranged, so that the anastomosis nails in the nail bin are always aligned with the nail pits of the nail anvil, and the smooth completion of constant-pressure anastomosis is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially, and it is a kind of pressure control type's endoscope anastomat. BACKGROUND

[0002] At present, the endoscopic linear cutting anastomat on the market mainly has two structural forms, one is that cutting knife is assembled in component, and the corresponding nail bin is type I nail bin, and the other is that cutting knife is assembled in body, and the corresponding nail bin is called type II nail bin.The two kinds of nail bins select different nail heights according to the different thickness of tissue when firing, and the selection of nail bin is based on previous experience, and the gap between the jaws is guaranteed by I-beam, so that the nail rate is guaranteed, regardless of tissue pressure, or the tissue pressure is taken as a secondary factor, and the limit value of anastomotic suture strength is simply controlled.The adaptability of the method for controlling the pressure of the jaw gap by the jaw gap is poor, and the pressure value cannot be adjusted, so the adaptability is poor, leading to large differences in the healing conditions of individuals and tissues.For example, the organ function of the elderly declines, normal tissue cells age, and cannot bear excessive tissue pressure;The organs of children develop quickly, but the tissue cells are still delicate, so they cannot bear excessive tissue pressure.In particular, different age patients and different diseased tissues have different optimal healing pressure values, so the adjustable pressure value has great clinical significance.

[0003] Chinese patent anastomat and cutting closure with pressure sensing and automatic adjusting device CN204158443U, for cutting anastomat, the nail plate side and the needle holder side of cutting anastomat (suture) are gradually closed from the center to the periphery when closed, the size of the pressure on the far side is controlled by the pressure sensor, the height of the needle holder is automatically adjusted according to the set pressure size, the thickness of the anastomotic stoma is automatically adjusted, so that the purpose of uniform anastomotic stoma pressure is achieved.But in this patent, the anvil and the nail bin seat are hinged, when the included angle is different, the anastomotic nails in the nail bin and the nail pits on the anvil cannot be always aligned, and the constant pressure anastomosis cannot be completed smoothly. UTILITARY MODEL CONTENT

[0004] To solve the above problems, the utility model provides a kind of pressure control type's endoscope anastomat, and specific technical solutions are as follows:

[0005] A kind of pressure control type's endoscope anastomat, comprising:

[0006] Nail bin assembly is provided with nail bin seat and the anvil matched therewith, nail bin is installed in the nail bin seat;

[0007] A translation mechanism is installed on the cartridge seat and the anvil to control the cartridge seat and the anvil to move in a translational manner to approach or move away from each other to adjust the jaw gap therebetween.

[0008] A pressure measuring unit is installed in the cartridge assembly to detect the pressure data of the tissue.

[0009] A pressure regulating mechanism is installed in an outer housing to control the translation mechanism to perform corresponding actions according to the detected pressure data; and

[0010] A cutting mechanism is provided with a push knife rod and a cutting knife connected to the front end thereof to cut the tissue into staples.

[0011] Further, the translation mechanism comprises:

[0012] A support rod is installed at the rear end thereof in the outer housing;

[0013] A plurality of movable rods are hingedly connected to the two sides of the cartridge seat and the anvil at one end thereof, and the other end thereof is symmetrically hingedly connected to the front end of the support rod; and

[0014] A pressure control sleeve is axially movably sleeved on the support rod, the rear end of the pressure control sleeve is installed in the outer housing and is in transmission connection with the pressure regulating mechanism, and the front end thereof extends to the movable rod and pushes the movable rod by the axial movement of the pressure control sleeve to make the movable rod push the cartridge seat and the anvil to move in a translational manner.

[0015] Further, the pressure regulating mechanism comprises a pressure control motor and a transmission mechanism, the pressure control motor is in transmission connection with the rear end of the pressure control sleeve through the transmission mechanism to control the axial movement of the pressure control sleeve.

[0016] Further, the pressure control motor is electrically connected with a stroke sensor, the stroke of the pressure control motor detected by the stroke sensor matches the axial displacement of the pressure control sleeve and the size of the jaw gap.

[0017] Further, the outer housing is provided with a pressure regulating switch for adjusting the jaw gap according to the pressure data of the tissue.

[0018] Further, the end of the movable rod hingedly connected to the support rod is provided with a torsional spring for resetting the jaw gap.

[0019] Further, the movable rod hingedly connected to the front end of the support rod can be partially or entirely extended into the pressure control sleeve.

[0020] Further, the pressure measuring unit comprises a pressure sensor, the pressure sensor is installed on the surface of the cartridge, the inner bottom surface of the cartridge seat or the surface of the anvil.

[0021] Further, the top surface of the outer shell is provided with a display screen for displaying tissue pressure data and jaw gap.

[0022] Further, the cutting mechanism further comprises a cutting motor mounted in the outer shell, the cutting motor being in transmission connection with the push-knife rod and driving the push-knife rod to move axially.

[0023] Beneficial effects:

[0024] The utility model discloses can measure the pressure parameter of tissue, and according to the accurate adjustment jaw gap of optimum healing pressure, the whole process is implemented stable squeezing to tissue anastomosis, improves the healing effect after tissue anastomosis, set up the translational mechanism, make the anastomosis nail in the nail bin and the nail pit of nail anvil always align, ensure that constant pressure anastomosis is successfully completed. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the whole schematic diagram of the utility model.

[0026] Figure 2 It is the outer shell of the utility model with control pressure sleeve cut open schematic diagram.

[0027] Figure 3 It is the utility model Figure 2 The enlarged schematic diagram of A place in.

[0028] Figure 4 It is the outer shell of the utility model without control pressure sleeve cut open schematic diagram.

[0029] Figure 5 It is the utility model Figure 4 The enlarged schematic diagram of B place in.

[0030] Figure 6 It is the schematic diagram of nail bin subassembly of the utility model.

[0031] In the drawing: 1 nail bin subassembly, 11 nail bin seat, 12 nail bin, 13 nail anvil, 14 jaw gap;2 translational mechanism, 21 support rod, 22 movable rod, 23 torsional spring, 24 control pressure sleeve, 25 movable slot;3 pressure regulating mechanism, 31 control pressure motor, 32 gear, 33 toothed plate, 34 stop ring, 35 stroke sensor;4 cutting mechanism, 41 cutting motor, 42 push-knife rod, 43 cutting knife, 44 push-nail block, 45 long rack, 46 gear set;5 outer shell, 51 support frame, 52 first handle, 53 pressurizing switch, 54 pressure reducing switch, 55 second handle, 56 knife feeding button, 57 knife retreating button, 58 display screen;6 pressure sensor, 7 controller, 8 power supply. DETAILED DESCRIPTION

[0032] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application.

[0033] In the description of the present application, it should be understood that the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0034] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] As shown in Figures 1 to 6 A pressure control type of endoscopic anastomat, comprising a staple cartridge assembly 1, a translational mechanism 2, a pressure measuring unit, a pressure regulating mechanism 3 and a cutting mechanism 4; wherein:

[0036] The staple cartridge assembly 1 is provided with a staple cartridge seat 11 and a corresponding anvil 13, the staple cartridge seat 11 is provided with a staple cartridge 12, and the anvil 13 is provided with a corresponding staple pit corresponding to the anastomat in the staple cartridge 12, so that the anastomat is positioned and formed on the staple pit;

[0037] The translational mechanism 2 is installed on the staple cartridge seat 11 and the anvil 13, which is used to control the staple cartridge seat 11 and the anvil 13 to move in a translational motion to adjust the jaw gap 14 between them;

[0038] The pressure measuring unit is installed in the staple cartridge assembly 1, which is used to detect the pressure data of the tissue, and the pressure regulating mechanism 3 is used to adjust the tissue to the optimal healing pressure;

[0039] The pressure regulating mechanism 3 is installed in an outer shell 5 and is used to control the translation mechanism 2 to perform corresponding actions according to the detected pressure data, thereby adjusting to a suitable jaw gap 14. The jaw gap 14 determines the nail height formed during anastomosis, which corresponds to the actual anastomotic pressure generated when squeezing the tissue.

[0040] The cutting mechanism 4 is provided with a pusher rod 42 and a cutting knife 43 connected to its front end. Under the appropriate jaw gap 14, the cutting mechanism 4 cuts the tissue into nails, so that the tissue is anastomosed under the optimal healing pressure, thereby improving the healing effect after tissue anastomosis.

[0041] Preferably, the cutting mechanism 4 further includes a cutting motor 41 installed in the outer shell 5. The cutting motor 41 is in transmission connection with the push rod 42 and drives the push rod 42 to move axially.

[0042] like Figure 2 、 3 As shown in Figures 6 and 7, the translation mechanism 2 includes a support rod 21, a movable rod 22 and a pressure-control sleeve 24; the rear end of the support rod 21 is installed in the outer shell 5; the movable rod 22 is provided with multiple pairs, one end of each movable rod 22 is hinged to the two sides of the nail magazine seat 11 and the nail anvil 13 side by side, and the other end of each movable rod 22 is symmetrically hinged to the front end of the support rod 21; the pressure-control sleeve 24 is axially movably sleeved on the support rod 21, the rear end of the pressure-control sleeve 24 is installed in the outer shell 5 and is transmission-connected to the pressure regulating mechanism 3, and its front end extends to the movable rod 22 and pushes the movable rod 22 through the axial movement of the pressure-control sleeve 24, so that the movable rod 22 pushes the nail magazine seat 11 and the nail anvil 13 to perform translational movement.

[0043] In one embodiment, a support frame 51 is disposed within the outer shell 5 to restrict movement of the support rod 21. Specifically, the rear end of the support rod 21 can extend beyond the rear end of the pressure-control sleeve 24, with the extended portion of the support rod 21 mounted on the support frame 51. Movable slots 25 can also be symmetrically defined in the pressure-control sleeve 24, with the support frame 51 passing through the movable slots 25 to connect with the support rod 21. The movable slots 25 should be of sufficient length to ensure ample axial movement of the pressure-control sleeve 24.

[0044] In another embodiment, at least two pairs of movable rods 22 are installed on the same side of the staple magazine seat 11 and the anvil 13. When the two pairs of movable rods 22 rotate simultaneously, two pairs of parallelogram structures are formed, so that the staple magazine seat 11 and the anvil 13 remain parallel to each other and move closer or farther away, so as to ensure that the staples in the staple magazine 12 are always aligned with the staple pits of the anvil 13, thereby achieving anastomosis under constant pressure.

[0045] The active lever 22 is hinged to the end of the support lever 21 and is provided with a torsion spring 23 for resetting the jaw gap 14; when the control sleeve 24 moves backward to gradually cancel the pushing force of the active lever 22, the staple cartridge seat 11 and the anvil 13 move away from each other under the restoring force of the torsion spring 23, so that the jaw gap 14 gradually widens. Similarly, when the control sleeve 24 moves forward to gradually apply the pushing force of the active lever 22, the active lever 22 drives the staple cartridge seat 11 and the anvil 13 to move closer to each other, so that the jaw gap 14 gradually narrows.

[0046] Preferably, the active lever 22 hinged to the front end of the support lever 21 can partially or entirely extend into the control sleeve 24. When the jaw gap 14 is at the maximum, the two pairs of active levers 22 at the front end of the support lever 21 are completely outside the control sleeve 24; when the jaw gap 14 is at the minimum, the two pairs of active levers 22 at the front end of the support lever 21 are completely inside the control sleeve 24. Therefore, the axial displacement amount of the control sleeve 24 matches the size of the jaw gap 14, i.e., the axial displacement amount of the control sleeve 24 can be controlled according to the desired size of the jaw gap 14, or the size of the jaw gap 14 can be adjusted according to the axial displacement amount of the control sleeve 24, so that the optimal healing pressure value can be adjusted according to different tissues.

[0047] As shown in Figure 3 The pressure regulating mechanism 3 comprises a control sleeve 24 and a pressure regulating mechanism 3, and the pressure regulating mechanism 3 comprises a control motor 31 and a transmission mechanism. The control motor 31 is in transmission connection with the rear end of the control sleeve 24 through the transmission mechanism, so as to control the axial movement of the control sleeve 24.

[0048] The transmission mechanism can be a combination mechanism commonly used to convert rotation into horizontal movement. Exemplarily, the transmission mechanism is a structure in which a gear 32 is in meshing connection with a toothed plate 33; the gear 32 is installed on the driving end of the control motor 31, the toothed plate 33 is connected with a stop ring 34 installed on the end of the control sleeve 24, and the gear 32 can drive the toothed plate 33 to move horizontally when it rotates forward or reversely, thereby driving the stop ring 34 to drive the control sleeve 24 to move axially to and fro, so as to control the jaw gap 14.

[0049] As shown in Figure 1 The outer housing 5 is provided with a first handle 52 and a second handle 55, wherein the control motor 31 is installed in the first handle 52, the cutting motor 41 is installed in the second handle 55, and the outer housing 5 is further provided with a power supply 8 for supplying power to various electrical facilities.

[0050] As shown in Figure 4As shown, the pressure control motor 31 is electrically connected with a stroke sensor 35, which detects the stroke of the pressure control motor 31 and matches the axial displacement of the pressure control sleeve 24 and the size of the jaw gap 14. Specifically, the stroke of the pressure control motor 31 controls the axial displacement of the pressure control sleeve 24, so that the size of the jaw gap 14 can be controlled by the stroke of the pressure control motor 31, and the stroke of the pressure control motor 31 can also be controlled according to the required size of the jaw gap 14.

[0051] As shown in Figure 1 , 5 As shown, the side of the first handle 52 is provided with a pressure adjustment switch for adjusting the jaw gap 14 according to the pressure data of the tissue; the pressure adjustment switch is divided into a pressure increasing switch 53 and a pressure decreasing switch 54 to adjust the required set anastomotic pressure.

[0052] In one embodiment, the top surface of the outer housing 5 is provided with a display screen 58 for displaying the pressure data of the tissue and the size of the jaw gap 14.

[0053] Specifically, the outer housing 5 is provided with a controller 7, and the pressure measuring unit, the pressure control motor 31, the stroke sensor 35, and the display screen 58 are all electrically connected with the controller 7. The controller 7 can detect the position of the pressure control sleeve 24 according to the stroke sensor 35, so as to obtain the size of the jaw gap 14. When it is necessary to adjust the actual anastomotic pressure of the tissue to reach the optimal healing pressure value, the optimal healing pressure can be set on the display screen 58; when the controller 7 detects that the set anastomotic pressure is inconsistent with the actual anastomotic pressure, the controller 7 controls the pressure control motor 31 to start and drive the pressure control sleeve 24 to move axially, so as to adjust the size of the jaw gap 14 to adjust the corresponding anastomotic pressure. In addition, the pressure increasing switch 53 or the pressure decreasing switch 54 can be pressed to adjust the required actual anastomotic pressure.

[0054] The display screen 58 also displays the size of the set anastomotic pressure and the actual anastomotic pressure in real time; when the anastomotic pressure is adjusted to the right position, the size of the jaw gap 14 is maintained by the pressure control sleeve 24, the cutting motor 41 completes the cutting and firing of the staples, so as to ensure that the anastomotic pressure of the tissue is always located at the optimal healing pressure value.

[0055] In addition, when the optimal healing pressure value of the tissue is uncertain, the pressure control motor 31 can also be manually controlled to start, the pressure measuring unit is used to detect the pressure data of the tissue at different sizes of the jaw gap 14, the optimal healing pressure value is calculated according to the pressure data, and the jaw gap 14 is automatically adjusted according to the calculated optimal healing pressure value.

[0056] It should be noted that when calculating the optimal healing pressure value of the tissue anastomosis, multiple factors need to be considered, including tissue type, anastomosis method, physical properties of blood vessels or tissues, and individual differences, clinical experience or experimental data, etc. A calculation model or parameter can be constructed based on this, and these calculation models or parameters are built into the controller, so as to facilitate the calculation of the optimal healing pressure value. The focus of this specification is not on the calculation of the optimal healing pressure value, so it does not need to be described in detail.

[0057] As shown in Figure 1 , 6 , the pressure measuring unit includes a pressure sensor 6 mounted on the surface of the cartridge 12, the inner bottom surface of the cartridge seat 11 or the surface of the anvil 13. Since the jaw gap 14 directly contacts the tissue, placing the pressure sensor 6 in the jaw gap 14 can directly measure the pressure data value of the tissue; wherein the pressure sensor 6 can be in various possible shapes such as sheet, wire, mesh, block, etc. The tissue pressure data detected by the pressure sensor 6 is transmitted to the controller 7 and displayed on the display screen 58.

[0058] In addition, when the doctor selects the cartridge 12, the jaw gap 14 obtained according to the optimal healing pressure value and the model of the cartridge 12 recommended by the big data can also be used for the doctor to choose, so as to reduce the subjective judgment of the doctor and make the anastomosis process more standardized. The anastomosis staple can be designed to have greater compatibility to ensure the anastomosis pressure while forming different staple heights.

[0059] As shown in Figure 3 , 6 , the push knife rod 42 is disposed through the support rod 21 and can move axially in the support rod 21; wherein the cutting knife 43 is located outside the front end of the support rod 21, the rear end of the push knife rod 42 extends out of the rear end of the support rod 21, and the rear end of the push knife rod 42 is connected with a long rack 45, and the driving end of the cutting motor 41 is connected with a gear set 46 engaged with the long rack 45. When the cutting motor 41 rotates, it can drive the push knife rod 42 to move axially, thereby pushing the cutting knife 43 to cut the tissue.

[0060] Specifically, the second handle 55 is provided with an advancing key 56 and a retreating key 57, and pressing the advancing key 56 and the retreating key 57 respectively can control the cutting motor 41 to rotate forward and backward, so as to realize the forward and backward movement of the cutting knife 43 through the push knife rod 42.

[0061] The cutting knife 43 is provided with a push staple block 44, which can align and staple the anastomosis staple in the cartridge 12 with the staple pit on the surface of the anvil 13 while the cutting knife 43 advances to cut the tissue, thereby completing the cutting and stapling of the tissue.

[0062] The cutting knife 43 of the traditional endoscope anastomat has lug structures on both sides to form an I-beam, which is used to make the nail cartridge seat close to the nail anvil and then fire the nails. Figure 6 As shown in the figure, the cutting knife 43 in the embodiment has no lug structure, forming a non-I-beam structure. When firing the nails, the constant jaw gap 14 keeps the nail cartridge seat 11 and the nail anvil 13 in a relatively unchanged position, and the cutting knife 43 can smoothly advance and retreat without affecting the jaw gap 14.

[0063] In use, a suitable nail cartridge 12 is selected and installed in the nail cartridge seat 11; according to different tissues, the optimal healing pressure value is set, the anastomosis pressure of the tissue detected by the pressure sensor 6 is used to control the pressure control motor 31 to start, so as to adjust the jaw gap 14 to the matched size. Press the knife button 56, the cutting motor 41 starts and pushes the cutting knife 43 to cut the tissue into nails.

[0064] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A pressure-controlled endoscopic anastomosis device, characterized by, The application relates to a surgical stapling and cutting device. The device comprises: a staple cartridge assembly provided with a staple cartridge seat and a staple anvil matched with the staple cartridge seat, wherein a staple cartridge is arranged in the staple cartridge seat; a translational mechanism arranged on the staple cartridge seat and the staple anvil, which is used for controlling the staple cartridge seat and the staple anvil to move in a translational mode to adjust the jaw gap between the two; a pressure measuring unit arranged in the staple cartridge assembly, which is used for detecting the pressure data of the tissue; a pressure regulating mechanism arranged in a housing, which is used for controlling the translational mechanism to perform corresponding actions according to the detected pressure data; and a cutting mechanism provided with a push-knife rod and a cutting knife connected to the front end of the push-knife rod, which is used for cutting the tissue into staples.

2. The pressure-controlled endoscopic anastomosis device according to claim 1, characterized in that The translational mechanism comprises: a support rod arranged in the housing; a plurality of movable rods, one end of each movable rod is hingedly connected to the two sides of the staple cartridge seat and the staple anvil, and the other end of each movable rod is symmetrically hingedly connected to the front end of the support rod; and a pressure control sleeve, which is axially movably sleeved on the support rod, the rear end of the pressure control sleeve is arranged in the housing and is in transmission connection with the pressure regulating mechanism, and the front end of the pressure control sleeve extends to the movable rods and pushes the movable rods by the axial movement of the pressure control sleeve, so that the movable rods push the staple cartridge seat and the staple anvil to move in a translational mode.

3. The pressure-controlled endoscopic anastomosis device according to claim 2, wherein The pressure regulating mechanism comprises a pressure control motor and a transmission mechanism, and the pressure control motor is in transmission connection with the rear end of the pressure control sleeve through the transmission mechanism to control the axial movement of the pressure control sleeve.

4. The pressure-controlled endoscopic anastomosis device according to claim 3, wherein The pressure control motor is electrically connected with a stroke sensor, and the stroke detected by the stroke sensor matches the axial displacement of the pressure control sleeve and the size of the jaw gap.

5. The pressure-controlled endoscopic anastomosis device according to claim 2, wherein The housing is provided with a pressure regulating switch for adjusting the jaw gap according to the pressure data of the tissue.

6. The pressure-controlled endoscopic anastomosis device according to claim 2, wherein The end of the movable rod hingedly connected to the support rod is provided with a torsional spring for resetting the jaw gap.

7. The pressure-controlled endoscopic anastomosis device according to claim 2, wherein The movable rods hingedly connected to the front end of the support rod can be partially or wholly extended into the pressure control sleeve.

8. The pressure-controlled endoscopic anastomosis device according to claim 1, wherein The pressure measuring unit comprises a pressure sensor arranged on the surface of the staple cartridge, the inner bottom surface of the staple cartridge seat or the surface of the staple anvil.

9. The pressure-controlled endoscopic anastomosis device according to claim 1, wherein The top surface of the housing is provided with a display screen for displaying the pressure data of the tissue and the jaw gap.

10. The pressure-controlled endoscopic anastomosis device according to claim 1, wherein The cutting mechanism further comprises a cutting motor arranged in the housing, which is in transmission connection with the push-knife rod and drives the push-knife rod to axially move.

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