Medical device inflation connecting piece

Abstract

The invention relates to a medical device inflation connector. A medical device includes a device body and an inflation tube connected to and extending from the device body. The inflation pipe fitting comprises an annular low-flow pipe fitting and an annular high-flow pipe fitting. The annular low flow tube includes a radially outward facing surface substantially opposite the first inner sealing surface. The inner sealing surface defines a flow channel for inflation gas. The annular high flow tubing includes a second inner sealing surface extending about and radially offset from a radially outward surface of the low flow tubing.

Description

[0001] This application is a divisional application of Chinese patent application 2020800134743 (PCT / US2020 / 017560) entitled “Medical Device Inflatable Connector”, with an international application date of February 10, 2020 and a national phase entry date of August 10, 2021.

[0002] Priority claim

[0003] This application claims the benefit of priority to U.S. Provisional Patent Application No. 62 / 803,977, filed February 11, 2019, the entire contents of which are incorporated herein by reference. Technical Field

[0004] This document relates generally to medical devices and, more particularly, to devices and methods for connecting a device to a fluid source, such as coupling an instrument seal to an inflation gas source. Background Art

[0005] Surgical procedures, such as minimally invasive laparoscopic surgery, may involve inflating a portion of the body with gas. For example, during laparoscopic surgery, inflation gas may be delivered to the patient's abdominal cavity to expand the abdomen, which may improve visual and physical access to the abdominal organs. For example, expansion of the patient's abdomen may provide sufficient operating space to enable adequate visualization of internal structures and manipulation of instruments.

[0006] Maintaining the flow and pressure of inflation gas is important during surgical procedures. For example, the interface between the surgical device and the access port in the patient's body should be sealed to prevent or reduce leakage of inflation gas and thus maintain inflation. When a leak occurs in the system, additional inflation gas may be required to maintain inflation throughout the procedure (e.g., to make up for the leaked inflation gas).

[0007] During minimally invasive surgery, such as laparoscopic surgery, one or more cannulas may be used to deliver surgical tools into a body cavity. Cannula seals are typically used to contain inflation gas pressure within a body cavity (regardless of whether an instrument is inserted) to prevent or reduce leakage of inflation gas through the cannula during surgery. An inflation gas source may be coupled to a medical device, such as a cannula seal, to deliver inflation pressure during surgery. Summary of the Invention

[0008] An example medical device includes a device body and an inflation fitting connected to and extending from the device body. The inflation fitting includes an annular low-flow fitting and an annular high-flow fitting. The annular low-flow fitting includes a radially outward surface substantially opposite a first inner sealing surface. The inner sealing surface defines a flow path for inflation gas. The annular high-flow fitting includes a second inner sealing surface extending around and radially offset from the radially outward surface of the low-flow fitting.

[0009] The medical device tubing includes an annular low-flow tubing having a radially outward-facing surface generally opposite a first inner sealing surface. The inner sealing surface defines a flow path for an inflation gas. The annular high-flow tubing has a second inner sealing surface extending around and radially offset from the radially outward-facing surface of the low-flow tubing. Additionally, a high-flow connector surrounds the low-flow tubing and includes a radially outwardly convex sealing surface that sealingly engages the second inner sealing surface.

[0010] Another medical device tubing includes an annular low-flow tubing having a radially outward-facing surface generally opposite a first inner sealing surface. The inner sealing surface defines a flow path for inflation gas. An annular high-flow tubing has a second inner sealing surface extending around and radially offset from the radially outward-facing surface of the low-flow tubing.

[0011] Each of these non-limiting examples may stand alone or may be combined in various permutations and combinations with one or more of the other examples.

[0012] This summary is intended to provide an overview of the subject matter of this patent application. It is not intended to provide an exclusive or exhaustive explanation of the invention. The detailed description is included to provide further information about various aspects of the inventive subject matter of this patent application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the accompanying drawings, which are not necessarily drawn to scale, like numbers may describe similar parts in different views. Like numbers with different letter suffixes may represent different instances of similar components. The accompanying drawings generally illustrate various embodiments discussed in this document by way of example and not limitation.

[0014] Figure 1A is a floor plan illustration of an exemplary medical system in a surgical setting.

[0015] Figure 1B is a diagram of an exemplary manipulation system.

[0016] Figure 1C is a diagram of an exemplary user control system.

[0017] Figure 1Dis a diagram of an exemplary assistance system.

[0018] Figure 1E is a description of an exemplary apparatus.

[0019] Figure 2A is a perspective view depicting an exemplary surgical instrument seal assembly.

[0020] Figure 2B It is a depiction Figure 2A A cross-sectional elevational view of an exemplary surgical instrument sealing assembly.

[0021] Figure 2C Depicts connection with low flow connector Figure 2A and 2B A cross-sectional elevational view of an exemplary surgical instrument sealing assembly.

[0022] Figure 2D Depicts connection with high flow connector Figures 2A-2C A cross-sectional elevational view of an exemplary surgical instrument sealing assembly.

[0023] Figure 3A is a perspective view depicting another exemplary surgical instrument seal assembly.

[0024] Figure 3B It is a depiction Figure 3A A cross-sectional elevational view of an exemplary surgical instrument sealing assembly.

[0025] Figure 3C Depicts connection with low flow connector Figure 3A and 3B A cross-sectional elevational view of an exemplary surgical instrument sealing assembly.

[0026] Figure 3D Depicts connection with high flow connector Figures 3A-3C A cross-sectional elevational view of an exemplary surgical instrument sealing assembly. DETAILED DESCRIPTION

[0027] As mentioned above, it is important to maintain inflation gas flow and pressure during surgery. However, in some cases, it is also important not to exceed threshold flow parameters, such as flow rate, volume flow rate, inflation pressure, etc. For example, it may be important to not exceed an inflation pressure of 80 mm HG8.0 (1.55 PSI). However, at this maximum pressure (or lower), the flow rate and / or volume flow rate may still change, and it may be necessary to increase the flow rate and / or volume flow rate.

[0028] For example, if there is a leak in the system, or if there is another source of gas escaping through the system, a higher fluid flow rate / volume flow rate may be needed or required. A higher flow rate can allow the system to keep up with the flow rate needed to maintain adequate inflation. An example of a specific application may be transanal surgery in the colon. Insulation applications involving smaller body cavities can be improved by a higher flow rate because it is generally easier to inflate a smaller body cavity with a higher flow rate. In addition, if the volume in the cavity is smaller, leaks (or other gas escape) will affect the volume flow rate more quickly, and a higher flow rate can provide more time to respond to such situations and thereby restore the appropriate or prescribed inflation state as soon as possible.

[0029] One type of standard tubing that can be used for inflation applications is the so-called Luer-type fitting ("Luer connector"). The Luer connector is a standardized system of fluid tubing used to connect male connector tubing on certain medical and laboratory devices to their mating female counterparts. With standard Luer-type fittings (and other standard tubing), fluid flow through the fittings is limited, at least in part, by the minimum diameter of the flow path formed when the fittings are coupled together. In Luer-type fittings, this minimum diameter is typically the inner diameter of the tapered male Luer fitting.

[0030] Because Luer-type tubing is an industry standard for medical devices, current medical devices are often designed to accommodate such standard tubing, including so-called Luer-type tubing. This universal design allows devices from different manufacturers (e.g., sources of inflation gas, vacuum, or irrigation fluids, etc.; cannula seal connections, irrigation / flushing instruments, etc.) to be connected together. However, because such standard tubing has fluid flow limitations, new tubing can advantageously be configured to accommodate / connect to higher-flow tubing and standardized low-flow Luer-type tubing for easy retrofitting.

[0031] In one example according to the present disclosure, a medical device includes a device body and an inflation tubing. The inflation tubing is coupled to and extends from the device body. The inflation tubing includes an annular low-flow tubing and an annular high-flow tubing. The annular low-flow tubing has a radially outward-facing surface generally opposite a first inner sealing surface. The inner sealing surface defines a flow path for inflation gas. The annular high-flow tubing has a second inner sealing surface extending around and radially offset from the radially outward-facing surface of the low-flow tubing.

[0032] In another example according to the present disclosure, a medical device includes a device body and an inflation tubing. The inflation tubing is coupled to and extends from the device body. The inflation tubing includes an annular high-flow tubing portion and an annular low-flow tubing portion. The annular high-flow tubing portion has a radially outward sealing surface generally opposite a first inner surface. The annular low-flow tubing portion extends away from the device body from the high-flow tubing portion. The low-flow tubing portion includes a first radially outward surface generally opposite an inner sealing surface, the first inner surface and the inner sealing surface defining a flow path for insufflation gas.

[0033] Figure 1A is a plan view depicting an exemplary medical procedure environment including a multi-arm manipulator system 100 adjacent to an operating table 101 supporting a patient 103. A second manipulator system 200 may also be located at the operating table 101. Manipulator systems 100, 200 may be independently positioned on a movable base, or they may be mounted to a table, floor, wall, or ceiling, or they may be supported on another piece of equipment in the clinical environment.

[0034] Manipulation system 100 or system 200 can be part of a larger system 10 that can include other subsystems, including, for example, a fluoroscopy or other imaging device. One or both of manipulation systems 100, 200 can be operably coupled to a user control system 150 or an auxiliary system 175, or both. User control system 150 can include one or more user input devices (e.g., controllers) that can be configured to receive input from a user (e.g., a clinician). User control system 150 can also include one or more user feedback devices (e.g., a viewing system, or a tactile or auditory feedback system) that can be configured to provide the user with information about the movement or position of the end effector, or an image of the surgical field. Auxiliary system 175 can, for example, include computer processing equipment (e.g., processor circuitry or graphics hardware), or communication equipment (e.g., wired or wireless communication circuitry), or endoscope camera control and image processing equipment.

[0035] Figure 1B An exemplary manipulation system 100 is depicted. The exemplary manipulation system 100 includes a base 102, a support tower 104, and one or more manipulation arms 110, 111, 112, 113, which may be mounted on the support tower 104. The instrument 130 (in Figure 1E 103 (shown in more detail in FIG. 104 ) is mounted to an instrument mount 120 on one of the manipulator arms 110-113. As an example, the instrument mount 120 includes, for example, an instrument bracket 122, which is mounted to a spar 124, which can be a telescoping or non-telescopic spar. A cannula 133 can be mounted to the cannula mount 126, and the instrument 130 can be inserted through a cannula seal in the cannula 133 and into the patient 103 ( Figure 1A) for therapeutic or diagnostic surgical procedures. By moving the manipulator arms 110-113, the translation and orientation of the instrument 130 can be controlled in multiple mechanical degrees of freedom, for example, lateral, horizontal, vertical, and angular motion in one, two, or three planes. The system 100 can include one or more optical features 136, 138, 140, 142, 144, 146 at one or more of various locations on the manipulator arms 110-113 (i.e., at the joints between the arm links, as shown).

[0036] The cannula 133 can be inserted into the patient 103 and a surgical instrument seal assembly (not shown) can be inserted into the cannula. The instrument seal can prevent insufflation gas from escaping through the open cannula when no instrument is inserted into the cannula, and it can also prevent insufflation gas from escaping between the instrument shaft and the inner wall of the cannula when an instrument is inserted into the cannula.

[0037] Figure 1C An exemplary user control system 150 is depicted. The user control system 150 includes hand controls 155, 156 and foot pedal controls 160, 161, 162. The hand controls 155, 156 and foot pedal controls 160, 161, 162 are used to control devices at one or more of the manipulation systems 100, 200. For example, an operator can manipulate portions of the distal end of the instrument 130 using the instrument controls. The controls may include tactile feedback features so that the surgeon can interpret physical information at the instrument 130, such as resistance or vibration, through the controls. The user control system 150 may also include a viewing system 165 that displays video or other images of the surgical site.

[0038] Figure 1DAn exemplary auxiliary system 175 is described. The exemplary auxiliary system 175 optionally includes telesurgery system functionality not incorporated into other system elements, such as a computer processing system 180 for handling teleoperation control, thereby facilitating communication between the user control system and the manipulator system or remote site, endoscopic camera control and lighting, electrosurgical generation and control, etc. The auxiliary system 175 may also include a display 190 that displays the image viewed by the user (e.g., clinician) on the user control system 150, a video feed from a camera in the patient 103, or other information. In an exemplary configuration, signals input at the user control system 150 may be transmitted to a processing system 180 on the auxiliary system 175, which interprets the input and generates commands that are transmitted to the manipulator system 100 to cause manipulation of the instrument 130 or a portion of the manipulator arm 110. For exemplary purposes, the processing system 180 is shown on a cart, but it may be arranged in various configurations; for example, it may be integrated as part of the user control system 150, the manipulator system 100, 200, or both, or divided between the user control system 150 and the manipulator system 100, 200. The device may also be provided as software, hardware, or both on an installed or remote system.

[0039] Figure 1E Depicts an exemplary instrument 130. The instrument 130 includes a proximal portion 192 configured to be coupled to an instrument mount on a manipulator arm. The instrument 130 also includes a distal portion 194 and an instrument shaft 196 between the proximal portion 192 and the distal portion 194. The distal portion 194 shown is a stapler, and among other instruments it may be a cautery tool, a cutter, a camera, or other medically relevant end effector. The instrument 130 can be remotely controlled to perform a surgical procedure by command signals received from a control computer (such as a user control system 150 or an auxiliary system 175). Input can be received from a user (e.g., a clinician) and the instrument 130 can be controlled based on the user input.

[0040] In one example, the instrument 130 is inserted into the patient 130 via a cannula 133, which also contains a surgical instrument seal assembly as described above. In such procedures, providing and maintaining inflation of the body cavity of the patient 130 may be important.

[0041] Figure 2A is a perspective view depicting an exemplary surgical instrument seal assembly 200 . Figure 2B is a cross-sectional elevational view depicting an exemplary surgical instrument seal assembly 200. Figure 2A and 2BThe instrument seal assembly 200 includes a device body 202, an inflation tube 204, and a valve 206. The valve 206 is fluidically connected to the fluid passage of the inflation tube 204 and is configured to control the flow of inflation gas into the device body 202. The valve 206 can be a variety of different valves, including Figure 2A and 2B The stopcock is depicted in the example.

[0042] The pneumatic tubing 204 extends from the device body 202 and a flow passage is defined through the tubing 204 and into the device body 202. The pneumatic tubing 204 includes a high-flow tubing 208 and a low-flow tubing 210. In the present disclosure, high flow refers to a higher flow rate and / or volumetric flow rate relative to low flow. In the case of the pneumatic tubing 204 and other such tubing according to the present disclosure, for a constant fluid pressure, the high-flow tubing 208 provides or achieves a higher fluid flow rate and / or volumetric flow rate than the low-flow tubing 210. In some examples, according to the present disclosure, the high-flow tubing 208 and the low-flow tubing 210 are manufactured integrally with each other to form the pneumatic tubing 204. However, in another example, the low-flow tubing 210 can be manufactured as a separate component and then coupled to the high-flow tubing 208. For example, the low-flow tubing 210 can be manufactured as a separate component and then coupled to the high-flow tubing 208 using, for example, an adhesive or by welding the low-flow tubing 210 to the high-flow tubing 208.

[0043] In the example of the inflatable tubing 204, the high-flow tubing 208 includes a first inner / inner (sometimes referred to as "concave") sealing surface 212 and a first coupling portion 214. The low-flow tubing 210 includes a second inner / inner sealing surface 216 and a second coupling portion 218. The first sealing surface 212 of the high-flow tubing 208 is a concave tapered surface whose diameter decreases from the free end 220 of the high-flow tubing 208 toward the valve 206 and the device body 202. Furthermore, the first sealing surface 212 is an annular sealing surface. Similarly, the second sealing surface 216 of the low-flow tubing 210 is a concave tapered surface whose diameter decreases from the free end 222 of the low-flow tubing 210 toward the high-flow tubing 208, the valve 206, and the device body 202. The second sealing surface 216 is also an annular sealing surface.

[0044] The first coupling portion 214 is on a first outer surface 224 of the high-flow tubing 208, which is generally opposite the first inner sealing surface 212. The second coupling portion 218 is on a second outer surface 226 of the low-flow tubing 210, which is generally opposite the second inner sealing surface 216. The first coupling portion 214 of the high-flow tubing 208 and the second coupling portion 218 of the low-flow tubing 210 include threads. In one example, the first coupling portion 214 and the second coupling portion 218 include Luer-type threads. In another example, the first coupling portion 214 and the second coupling portion 218 include another type of thread, lugs, or another locking / coupling mechanism.

[0045] The low-flow fitting 210 is concentric with and partially nested within the high-flow fitting 208. The high-flow fitting 208 and the low-flow fitting 210 share a common centerline axis 228, which also defines the flow path centerline of the flow passage 230 through the inflatable fitting 204. The high-flow fitting 208 is an annulus comprising a first outer surface 224 and a first inner sealing surface 212, which extend from the body 202 of the instrument seal assembly 200 to the free end 220 of the high-flow fitting 208. The low-flow fitting 210 is an annulus comprising a second outer surface 226 and a second inner sealing surface 216, which extend from the body 202 within the annular inner sealing surface 212 of the high-flow fitting 208 to the free end 222 of the low-flow fitting 210.

[0046] Although the inflation tubing 204 is described as being associated with an instrument seal assembly / access port device, in other examples, tubing according to the present disclosure can be used in association with various other medical devices that supply or receive gaseous or liquid fluids. Such medical devices can be used for various medical functions, such as body fluid or irrigation fluid aspiration, smoke evacuation, irrigation fluid supply, supplemental oxygen supply, endoscope lens cleaning and defogging, etc.

[0047] Thus, according to one aspect of the present invention, a standard medical device tubing, such as a female Luer-type tubing, is surrounded by a concentric second female tubing. The female Luer-type tubing receives a corresponding male Luer-type tubing to establish a fluid flow path through the coupled female and male Luer-type tubing, but as described below, this flow path is limited by the Luer-type tubing design. Thus, the surrounding second female tubing can receive a corresponding second male tubing to establish a fluid flow path through the standard female tubing that is not limited by the standard female / male tubing design.

[0048] Figure 2C is a cross-sectional elevational view depicting an exemplary surgical instrument seal assembly 200. Figure 2C In FIG, the sealing assembly 200 is coupled to a low flow Luer-type connector 240 that is connected to a low flow inflation line 242 . Figure 2CThe example depicts a manner in which an inflation tubing 204 according to the present disclosure may be fitted to a Luer-type connector 240 for relatively low flow inflation (relative to, for example, the following description). Figure 2D In particular, Figure 2C The example depicts a manner in which the low-flow tubing 210 of the inflation tubing 204 can be fitted to a Luer-type connector 240 for relatively low-flow inflation.

[0049] The low flow luer connector 240 includes a locking ring 244 coupled to a male luer fitting 246, which is coupled to a low flow inflation gas source line 242. The locking ring 244 includes a coupling portion 248, which may include, for example, threads, lugs, or other locking mechanisms. The male luer fitting 246 includes an outer convex sealing surface 250. The outer sealing surface 250 of the male luer fitting 246 is a convex conical surface whose diameter decreases as the outer sealing surface 250 extends toward the free end of the male luer fitting 246. Figure 2C , the diameter of the outer sealing surface 250 decreases as it extends into the low flow fitting 210 .

[0050] The locking ring 244 is configured to be coupled to the low flow fitting 210 via the second coupling portion 218. Figure 2C As shown, the coupling portion 248 of the locking ring 244 is threadedly engaged to the second coupling portion 218 of the low-flow tubing 210. When the locking ring 244 is threaded onto the second coupling portion 218, the Luer connector 240 including the Luer fitting 246 is drawn into engagement with the tubing 210, and in particular, the convex outer sealing surface 250 of the Luer fitting 246 is drawn into sealing engagement with the concave inner first sealing surface 216 of the low-flow tubing 210.

[0051] exist Figure 2C In the example of FIG, wherein the low flow tubing 210 of the inflation tubing 204 according to the present disclosure is assembled to a low flow Luer connector 240 and an associated Luer tubing 246, the minimum inner diameter of the Luer connector 240 limits the flow rate (rate and / or volume) of the inflation gas. In particular and as Figure 2C As shown, the inner diameter of the low flow Luer fitting 246 restricts the flow of inflation fluid.

[0052] Figure 2D is a cross-sectional elevational view depicting an exemplary surgical instrument seal assembly 200. Figure 2D In FIG. 2 , the seal assembly 200 is coupled to a high flow Luer-type connector 260 that is connected to a high flow inflation gas supply line 262 . Figure 2D 1 depicts an example in which a high flow tubing 208 of an inflation tubing 204 according to the present disclosure may be fitted to a high flow Luer-type connector 260 for relatively high flow (rate and / or volume) inflation.

[0053] The high flow luer connector 260 includes a locking ring 264 coupled to a high flow male luer fitting 266, which is coupled to the high flow inflation line 262. In some examples, the high flow luer connector 260 is packaged and pre-connected with the high flow inflation line 262. However, in other examples, the high flow luer connector 260 is packaged separately from the high flow inflation line 262 and is configured to be connected to an inflation line, for example, the line 262. The locking ring 264 includes a coupling portion 268, which may include, for example, threads, lugs, or other locking mechanisms. The high flow male luer fitting 266 includes an outer convex sealing surface 270. The outer sealing surface 270 of the male luer fitting 266 is a convex conical surface having a diameter that decreases as the outer sealing surface 270 extends toward the free end male luer fitting 266. Figure 2D , the diameter of the outer sealing surface 270 decreases as it extends into the high flow tubing 208 .

[0054] The locking ring 264 is configured to be coupled to the high flow fitting 208 via the first coupling portion 214. Figure 2D As shown, the coupling portion 264 of the locking ring 264 is threadedly engaged to the first coupling portion 214 of the high-flow tubing 208. When the locking ring 264 is threaded onto the first coupling portion 214, the high-flow luer connector 260, including the high-flow luer fitting 266, is drawn into engagement with the tubing 208, and specifically, the convex outer sealing surface 270 of the luer fitting 266 is drawn into sealing engagement with the concave inner first sealing surface 212 of the high-flow tubing 208.

[0055] exist Figure 2D In the example of FIG. 1 , in which the high-flow tubing 208 of the inflation tubing 204 according to the present disclosure is assembled to a high-flow Luer connector 260 and an associated high-flow Luer tubing 266, the minimum inner diameter of the low-flow tubing 210 limits the flow rate (rate and / or volume) of the inflation gas. In particular and as Figure 2D As shown, the inner diameter of the low flow pipe 208, which is the minimum inner diameter of the second inner sealing surface 216, limits the inflation flow. Figure 2C In the example shown in FIG, the inner diameter of the low-flow Luer-type tubing 246 limits the inflation flow rate. Because the minimum diameter of the second inner sealing surface 216 is larger than the inner diameter of the low-flow Luer-type tubing 246, the high-flow tubing 208 of the inflation tubing 204 is connected to the high-flow Luer-type connector 260 (compared to the case where the low-flow tubing 210 is connected to the low-flow Luer-type connector 240). Figure 2D ) a larger inflation flow is possible.

[0056] Figure 3A is a perspective view depicting an exemplary surgical instrument seal assembly 300 . Figure 3Bis a cross-sectional elevational view depicting an exemplary surgical instrument seal assembly 300. Figure 3A and 3B The instrument seal assembly 300 includes a device body 302, an inflation tube 304, and a valve 306. The valve 306 is fluidically connected to the fluid channel inflation tube 304 and is configured to control the flow of inflation gas into the device body 302. The valve 306 can be a variety of different valves, including Figure 3A and 3B The stopcock is depicted in the example.

[0057] The pneumatic tubing 304 extends from the device body 302 and a flow passage is defined through the tubing 404 and into the device body 302. The pneumatic tubing 304 includes a high-flow tubing portion 308 and a low-flow tubing portion 310. In the example of the pneumatic tubing 304, the high-flow tubing portion 308 includes an outer / external ("male") sealing surface 312 and a first coupling portion 314. The low-flow tubing portion 310 includes an inner / inner ("female") sealing surface 316 and a second coupling portion 318.

[0058] The outer sealing surface 312 of the high-flow tubing portion 308 is a convexly tapered surface whose diameter decreases from the free end 320 of the gas-filled tubing 304 toward the valve 306 and the device body 302. Furthermore, the outer sealing surface 312 is an annular sealing surface. The inner sealing surface 316 of the low-flow tubing portion 310 is a concavely tapered surface whose diameter decreases from the free end 320 of the gas-filled tubing 304 toward the high-flow tubing portion 308, the valve 306, and the device body 302. The inner sealing surface 316 is also an annular sealing surface.

[0059] The first coupling portion 314 is on a first outer surface 324 of the high flow tubing portion 308, and the outer surface 324 is positioned from the outer sealing surface 312 toward the valve 306 and the device body 302. The first coupling portion 314 and the first outer surface 324 form a shoulder that radially offsets the coupling portion 314 and the surface 324 from the outer sealing surface 312 and makes the outer diameter of the first outer surface 324 greater than the outer diameter of the outer sealing surface 312.

[0060] The second coupling portion 318 is on the second outer surface 326 of the low-flow tubing portion 310, and the outer surface 326 is generally opposite the inner sealing surface 316. The first coupling portion 314 of the high-flow tubing portion 308 and the second coupling portion 318 of the low-flow tubing portion 310 include threads. In one example, the first coupling portion 314 and the second coupling portion 318 include Luer-type threads. In another example, the first coupling portion 314 and the second coupling portion 318 include another type of thread, lugs, or another locking / coupling mechanism.

[0061] The high flow tubing portion 308 extends from and is coupled to the device body 302. Figure 3A and 3B , the high-flow tubing portion 308 is coupled to the valve 306, which is coupled to the device body 302. The low-flow tubing portion 310 is concentric with and integral with the high-flow tubing portion 310 and extends from the high-flow tubing portion 310. The high-flow tubing portion 308 and the low-flow tubing portion 310 share a common axis 328, which also defines a flow path through the flow channel 330 of the inflatable tubing 304. The high-flow tubing portion 308 is an annulus that includes an outer sealing surface 312, a first outer surface 324, and an inner surface that extends from the inner sealing surface 316 of the high-flow tubing portion 308 toward the body 202 of the instrument seal assembly 200. The low-flow tubing portion 310 is an annulus that includes a second outer surface 326 and an inner sealing surface 316 that extend from the high-flow tubing portion 308 to the free end 320 of the low-flow tubing portion 310.

[0062] While inflation tubing 304 is described as being associated with an instrument seal assembly / access port device, in other examples, inflation tubing according to the present disclosure may be used in association with various other medical devices.

[0063] Thus, according to another aspect of the present invention, a standard medical device tubing, such as a female Luer-type fitting, is aligned with a concentric male second fitting. As already described, the female Luer-type fitting receives a corresponding male Luer-type fitting to establish a fluid flow path through the coupled female and male Luer-type fittings, and this flow path is constrained by the Luer-type fitting design. Additionally, the aligned male second fitting can receive a corresponding female second fitting to establish a fluid flow path through the standard female fitting, which is not constrained by the standard female / male fitting design.

[0064] Figure 3C is a cross-sectional elevational view depicting an exemplary surgical instrument seal assembly 300. Figure 3C 3, the sealing assembly 300 is coupled to a low flow Luer connector 340 connected to a low flow inflation line 342. The example of FIG. 3 depicts an example in which an inflation tubing 304 according to the present disclosure can be fitted to a Luer connector 340 for relatively low flow inflation (e.g., relative to the low flow inflation described below). Figure 2D In particular, Figure 3C The example depicts a manner in which the low flow tubing 310 of the inflation tubing 304 can be fitted to a Luer-type connector 340 for relatively low flow inflation.

[0065] The low flow luer connector 340 includes a locking ring 344 coupled to a male luer fitting 346, which is coupled to the low flow inflation line 342. The locking ring 344 includes a coupling portion 348, which may include, for example, threads, lugs, or other locking mechanisms. The male luer fitting 346 includes an outer convex sealing surface 350. The outer sealing surface 350 of the male luer fitting 346 is a convex conical surface whose diameter decreases as the outer sealing surface 350 extends toward the free end of the male luer fitting 346. Figure 2C , the diameter of the outer sealing surface 350 decreases as it extends into the low flow fitting portion 210 .

[0066] The locking ring 344 is configured to be coupled to the low flow pipe portion 310 via the second coupling portion 318. For example and as Figure 3C As shown, the coupling portion 348 of the locking ring 344 is threadedly engaged to the second coupling portion 318 of the low-flow tubing portion 310. When the locking ring 344 is threaded onto the second coupling portion 318, the luer connector 340 including the luer fitting 346 is drawn into engagement with the tubing portion 310, and specifically, the convex outer sealing surface 350 of the luer fitting 346 is drawn into engagement with the concave inner sealing surface 316 of the low-flow tubing portion 310.

[0067] exist Figure 3C In an example, wherein the low flow tubing portion 310 of the inflation tubing 304 according to the present disclosure is assembled to a low flow Luer connector 340 and an associated Luer tubing 346, the minimum diameter of the Luer connector 340 limits the flow rate (rate and / or volume) of the inflation gas. Figure 3C As shown, the inner diameter of the low flow Luer fitting 346 restricts the inflation flow.

[0068] Figure 3D is a cross-sectional elevational view depicting an exemplary surgical instrument seal assembly 300. Figure 3D In FIG, the sealing assembly 300 is coupled to a high flow Luer-type connector 360 that is connected to a high flow inflation line 362 . Figure 3D The example depicts a manner in which a high flow tubing portion 308 of an inflation tubing 304 according to the present disclosure may be fitted to a high flow luer-type connector 360 for relatively high flow (rate and / or volume) inflation.

[0069] The high flow luer connector 360 includes a locking collar 364 coupled to a high flow female luer fitting 366, which is coupled to a high flow inflation line 362. In some examples, the high flow luer connector 360 is packaged and pre-connected with the high flow inflation line 362. However, in other examples, the high flow luer connector 360 is packaged separately from the high flow inflation line 362 and is configured to be connected to an inflation line, such as line 362. The locking collar 364 includes a coupling portion 368, which may include, for example, threads, lugs, or other locking mechanisms. The high flow female luer fitting 366 includes an inner concave sealing surface 370. The inner sealing surface 370 of the female luer fitting 366 is a concave tapered surface having a diameter that increases as the inner sealing surface 370 extends toward the free end of the female luer fitting 366. Figure 2D , the diameter of the inner sealing surface 370 decreases as it extends onto and into sealing engagement with the high flow tubing portion 308.

[0070] The locking ring 364 is configured to be coupled to the high flow pipe portion 308 via the first coupling portion 314. Figure 2D As shown, the coupling portion 364 of the locking ring 364 is threadedly engaged to the first coupling portion 314 of the high-flow tubing portion 308. When the locking ring 364 is threaded onto the first coupling portion 314, the high-flow luer connector 360, including the high-flow luer fitting 366, is drawn into engagement with the tubing portion 308, and specifically, the concave inner sealing surface 370 of the luer fitting 366 is drawn into sealing engagement with the concave inner sealing surface 312 of the high-flow tubing portion 308.

[0071] exist Figure 3D In the example of FIG. 5 , wherein the high-flow tubing portion 308 of the inflation tubing 304 according to the present disclosure is assembled to a high-flow Luer connector 360 and an associated high-flow Luer tubing 366, the minimum inner diameter of the low-flow tubing portion 310 limits the flow rate (rate and / or volume) of the inflation gas. In particular and as Figure 3D As shown, the inner diameter of the low flow pipe portion 308, which is the smallest diameter of the second inner sealing surface 316, restricts the flow of inflation gas. Figure 3C In the example of FIG, the inner diameter of the low-flow Luer fitting 346 limits the inflation flow. Because the minimum inner diameter of the second inner sealing surface 316 is larger than the inner diameter of the low-flow Luer fitting 346, the second inner sealing surface 316 is more easily opened when connected to the high-flow Luer connector 360 ( FIG. 2 ) than when connected to the low-flow fitting portion 310 of the low-flow Luer connector 340. Figure 2D ) in the case of the high flow pipe portion 308 of the inflation pipe 304, a larger inflation flow rate can be achieved.

[0072] Those skilled in the art will appreciate that any of the above features can be combined with any of the other exemplary features, as long as the features are not mutually exclusive. All possible feature combinations are contemplated, depending on clinical or other design requirements. Furthermore, if the manipulation system units are combined into a single system (e.g., a telesurgery system), each individual unit may have the same feature configuration, or one patient-side unit may have one feature configuration and another patient-side unit may have a second, different feature configuration.

[0073] The examples described herein (e.g., methods, systems, or devices) may be applicable to surgical procedures, non-surgical medical procedures, diagnostic procedures, cosmetic procedures, and non-medical procedures or applications. These examples may also be applicable to training or obtaining information, such as imaging procedures. The examples may be applicable to processing tissue that has been removed from a human or animal anatomy and will not be returned to a human or animal, or for processing human or animal corpses. These examples may be used in industrial applications, general robotics, and manipulation of non-tissue workpieces, as part of an artificial intelligence system or in a transport system.

[0074] The above detailed description includes reference to the accompanying drawings, which form a part of the detailed description. The accompanying drawings show specific embodiments in which the present invention can be practiced by way of illustration. These embodiments are also referred to herein as "examples". Such examples may include elements other than those shown or described. However, the inventors also consider examples in which only those elements shown or described are provided. In addition, with respect to a specific example (or one or more aspects thereof), or with respect to other examples shown or described herein (or one or more aspects thereof), the inventors also consider examples using any combination or arrangement of those elements shown or described (or one or more aspects thereof).

[0075] In the event of a discrepancy in usage between this document and any document incorporated by reference, the usage in this document controls.

[0076] In this document, use of the terms "a" or "an" (as is common in patent documents) includes one or more than one, independent of any other instance or usage of "at least one" or "one or more." In this document, unless otherwise stated, the term "or" is used to refer to non-exclusivity, such as "A or B" includes "A but not B," "B but not A," and "A and B." In this document, the terms "including" and "in which" are used as the plain-English equivalents of the respective terms "comprising" and "wherein." In addition, in the following claims, the terms "including" and "comprising" are open-ended, that is, systems, devices, articles, compositions, preparations, or processes that include elements other than those listed after such terms in the claim are still considered to be within the scope of the claim. Furthermore, in the appended claims, the terms "first," "second," "third," etc. are used merely as labels and do not impose numerical requirements on their objects.

[0077] Unless context indicates otherwise, geometric terms, such as "parallel", "vertical", "circular" or "square" are not intended to require absolute mathematical accuracy. On the contrary, such geometric terms allow to change due to manufacturing or equivalent functions. For example, if an element is described as "circular" or "roughly circular", the present description still covers non-precise circular assemblies (for example, slightly oblong or polygonal assemblies) so. Coordinate system or reference system are provided to help explain and implants can use other reference systems or coordinate systems that are different from those reference systems or coordinate systems described herein.

[0078] The above description is intended to be illustrative, not restrictive. For example, the above examples (or one or more aspects thereof) can be used in combination with each other. For example, a person of ordinary skill in the art can use other embodiments after reading the above description. The abstract is provided to allow the reader to quickly determine the nature of the technical disclosure. It should be understood that the abstract is not used to interpret or limit the scope or meaning of the claims. In addition, in the above-mentioned specific embodiments, various features can be combined together to simplify the present disclosure. This should not be interpreted as intending that the disclosed features that are not claimed for protection are essential to any claim. Rather, the subject matter of the invention may lie in less than all the features of a specific disclosed embodiment. Therefore, the following claims are hereby incorporated into the specific embodiments as examples or embodiments, wherein each claim is independently a separate embodiment, and it is expected that such embodiments can be combined with each other in various combinations or arrangements. The scope of the present invention should be determined with reference to the appended claims and the full range of equivalents given by such claims.

Claims

1. A medical device comprising: a device body and an inflatable tube connected to and extending from the device body; The inflatable pipe fittings include an annular low-flow pipe fitting and an annular high-flow pipe fitting; The annular low-flow tube includes a radially outwardly facing surface generally opposite a first inner sealing surface, the inner sealing surface defining a flow passage for inflation gas; and The annular high flow tube includes a second inner sealing surface extending around and radially offset from the radially outward surface of the low flow tube.

2. The medical device according to claim 1, wherein The low-flow pipe is concentric with the high-flow pipe and partially nested in the high-flow pipe.

3. The medical device according to claim 1 or claim 2, wherein: The first inner sealing surface includes a concave tapered surface.

4. The medical device according to claim 3, wherein The inner diameter of the first inner sealing surface is greatest at an end of the low flow tubing that is offset from the device body.

5. The medical device according to any one of claims 1 to 4, wherein: The second inner sealing surface includes a concave tapered surface.

6. The medical device according to claim 5, wherein The inner diameter of the second inner sealing surface is greatest at an end of the high flow tubing that is offset from the device body.

7. The medical device according to any one of claims 1 to 6, wherein: The first inner sealing surface comprises an annular sealing surface.

8. The medical device according to any one of claims 1 to 7, wherein: The first inner sealing surface includes an annular concave tapered sealing surface.

9. The medical device according to any one of claims 1 to 8, wherein: The second inner sealing surface comprises an annular sealing surface.

10. The medical device according to any one of claims 1 to 9, wherein: The second inner sealing surface includes an annular concave tapered sealing surface.

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