JP2004535225A - Fluid delivery system for use with a surgical pump unit - Google Patents

Abstract

The new system for connecting and / or supporting the pump (20) to the fluid supply (10) so that the pump (20) must be supported by the support means in order to establish a fluid connection This provides a surgical irrigation system that reduces the likelihood of the pump (20) disconnecting from the fluid supply (10).

Description

【Technical field】
[0001]
The present invention claims the benefit of co-pending U.S. Provisional Application No. 60 / 291,583, filed May 16, 2001, entitled "Fluid Delivery System With Surgical Pump Unit," The entire disclosure of the provisional application is hereby incorporated by reference for all purposes, as if fully set forth.
[0002]
The present invention relates to a system for supplying fluid to a surgical site within the body, and more particularly, the present invention relates to a connection system for connecting a pump or other instrument to a fluid supply for supplying fluid to a surgical site. .
[Background Art]
[0003]
Surgical irrigation systems are known in the art. Such systems typically consist of a handpiece having an irrigation fluid supply, an inlet port connected to the irrigation fluid supply, and an outlet port connected to, for example, a probe extending to a surgical site in the body. Generally, a plastic bag containing irrigation liquid is hung on an IV pole and connected to the handpiece via a pump device connected to the bag containing fluid through a tubular spike.
[0004]
One example of such a system is disclosed in U.S. Pat. No. 5,484,402 issued Jan. 16, 1996 to Saravia et al. Incorporated herein by reference. Saravia et al. Disclose a surgical irrigation system having a handpiece, a protruding hollow tip, and a self-contained pump unit for pumping irrigation fluid to a surgical site, located remotely from the handpiece. The remotely located pump unit has a power source (such as a battery pack) that is activated by an electrical switch in the handpiece. Therefore, the self-contained pump unit must be connected to the switch in the handpiece by running an electric cable along the flexible tubing that connects the pump unit to the electric switch on the handpiece, and this electric cable is handled. Is troublesome. Further, the pump unit is directly connected to the fluid bag by a tubular spike connector which is connected to a luer connector of the fluid bag. The pump unit is suspended from the bag simply by interconnecting the connectors or is supported by a bracket. In this system, the arrangement of the pump unit is limited because the pump unit must be directly connected to the liquid bag. This creates a potentially dangerous situation. For example, some operating rooms have limited space for surgeons and other hospital personnel to move around. In such a case, a dangerous state occurs in which the pump unit is disconnected from the connection portion with the liquid bag due to a collision or the like and the delivery of the liquid to the patient is interrupted, and the operating room is unsanitary and unsafe. The likelihood of a situation increases. This is especially true if the pump unit is suspended from the liquid bag and is not supported by the bracket.
[0005]
Another system is disclosed in U.S. Patent No. 6,176,847 issued January 23, 2001 to Humphreys, Jr. et al. For all purposes, it is incorporated herein by reference. Humphries Jr. et al. Disclose a surgical irrigation system comprising a flow sensor device having a fluid accelerator that increases fluid flow to a surgical handpiece. The flow sensor device is directly connected to and supported by the liquid bag, but is adjustably fixed and supported on a vertical IV pole. Although this system has proven effective, the present invention provides improvements in the configuration and arrangement of the components of the irrigation system.
DISCLOSURE OF THE INVENTION
[Means for Solving the Problems]
[0006]
The present invention solves the problems described for prior art surgical irrigation systems by providing new systems and methods for connecting a pump or other fluid acceleration device to a fluid supply.
[0007]
The present invention provides a surgical irrigation system that must support the pump in order to keep the pump in fluid communication with the fluid supply. This system is a novel system that connects a pump to a liquid bag, so that the pump must be supported rather than suspended from the liquid bag, thereby reducing the possibility of the pump coming off the liquid bag. Is provided. The present invention further allows the pump to be placed in a variety of locations and can be moved out of the path of surgeons and other hospital personnel, thereby reducing the risk of the pump coming off the fluid bag due to a collision or the like.
[0008]
The present invention further provides a means for automatically stopping the supply of liquid flow if the pump is not properly supported for use.
[0009]
In one embodiment, the pump is connected to the bladder by at least one flexible tube. The flexible tubing is connected to the pump by various connectors and / or fittings and can be in various configurations. A plurality of flexible tubes may be connected to the pump to connect to one or more liquid bladders.
[0010]
In another embodiment, the pump has a switch that completes the electrical circuit that powers the pump motor only when the pump is located in and / or supported by the support means. If the pump is not located in the support means, the switch will remain open, no power will be supplied to the pump motor and no fluid will flow to the handpiece.
[0011]
In another embodiment, the pump closes when the pump is not supported in the support means and is connected to the bladder by a connector having a valve that prevents fluid flow.
[0012]
In yet another embodiment, the pump is connected to the bladder by a connector supported by a bracket. The pump is constructed and arranged such that it cannot be connected to the liquid bag except by a connector that is itself supported.
[0013]
In yet another embodiment, the pump is connected to the bladder by a connector that blocks the flow until the user activates the release mechanism to initiate the flow.
[0014]
These and other embodiments are introduced in detail in the following detailed description and drawings.
[0015]
The present invention is useful in surgical irrigation systems and encompasses a variety of designs. The system includes a novel assembly of a pump mechanism, a pump support, and a fluid source for supplying fluid to a surgical instrument, such as a lightweight handpiece. The present invention provides a simple, efficient and safe fluid pump assembly.
[0016]
According to one aspect of the surgical irrigation system of the present invention, the fluid connection between the pump and the fluid supply is only possible if the pump is fastened to an IV pole or otherwise supported. Providing a pump and fluid source assembly provides a safer and more sterile irrigation system. By limiting the establishment of fluid flow between the pump and the fluid source only when the pump is supported, the present invention provides for the pump to disconnect from the fluid source during a surgical procedure. Reduce the likelihood.
[0017]
According to another aspect of the invention, another connection is provided between the pump and the fluid supply, wherein the flow to the pump is blocked until the user performs a function to cause the flow. Similarly, such a connection can interrupt fluid flow if the pump system is not set up properly.
BEST MODE FOR CARRYING OUT THE INVENTION
[0018]
For a fuller understanding of the invention, reference is made to non-limiting examples of particularly preferred embodiments of the invention.
[0019]
A representative surgical irrigation system of the present invention is shown in FIG. 1, in which a fluid source 10, such as a bag 12 according to a conventional method, is shown, for example, in which the bag 12 is a surgical handpiece. This is accomplished by utilizing a liquid-containing bag 12 supported by a horizontal arm 14 that is adjustably secured to a pole 16 that stands upright in a manner that separates from and extends horizontally. Liquid is supplied to the handpiece 18 through the pump 20 by providing a flexible conduit, such as a long flexible tube 22 that extends from the outlet 24 of the pump to the handpiece 18. The pump 20 is connected to the bag 12 via the flexible tube 30 and need not be located on the handpiece 18. The pump 20 is preferably adjustably fixed and supported by a support bracket 26 on a vertical pole. The bag 12 has an outlet 28 connected by a flexible tube 30 to an inlet 32 of the pump 20.
[0020]
Handpiece 18 is one type of surgical device that can be used with the irrigation system of the present invention. The handpiece 18 is provided with a probe 34 that can be inserted into the surgical site so that the surgeon can supply liquid to the surgical site. Handpiece 18 may be of the type shown and described in US Pat. No. 6,176,847, the disclosure of which is incorporated herein by reference. The handpiece 18 may also include a manually controllable valve 36 that can start and stop the gravity flow of liquid from the bag 12 through the pump 20, as depicted here as a trumpet valve. Good. The surgeon opens valve 36 to start the gravity flow of the liquid. Then, the pump 20 is activated and the impeller or fluid accelerator 38 (FIG. 2) increases the flow of liquid to the handset 18.
[0021]
The surgeon can also stop the flow of liquid by simply closing the valve 36 of the handpiece 18. Then, the remotely located pump 20 functions to stop the flow of liquid. This will be described in detail.
[0022]
The handpiece 18 can also be connected to a suction source and the handpiece 18 uses a connecting tube leading to two trumpet valves as shown in FIG. It is also possible to design so that it is possible to select whether to supply or vacuum.
[0023]
As shown in FIG. 2, the pump 20 generally comprises a liquid flow chamber 40 into which liquid flows through an inlet 32 connected to a liquid bag or other liquid supply. A suitable flow detector 46 capable of sensing a liquid flow is provided in the liquid flow chamber 40. The flow detector 46 further includes a conventional or proprietary trumpet valve for opening and closing gravity flow. The motor 48 includes an activator for operating the motor 48 for driving a pump or an impeller for increasing the liquid flow, which will be described in detail later.
[0024]
The impeller housing 50 further has an inlet 32 having an inlet passage 52 that includes a levitating capsule 54 with a magnet 56. The magnet 56 is shown in the capsule 54, but can be located on its outer surface or elsewhere. The levitating capsule 54 is installed in the liquid flow chamber 40. A Hall effect switch circuit board and a Hall effect sensor 58 are mounted on the pump 20, but at a desired location below the flow chamber 40 and the inlet passage 52. The Hall effect switch circuit is connected to motor 48 by conventional electrical wiring (not shown). Motor 48 is powered by conventional means, for example, battery 60, which operates through circuit board 62. The outlet port 44 of the outlet 24 is connected by a flow tube to the surgical handpiece 18, which has a valve 36 for starting and stopping the flow. Since the pump 20 of FIG. 2 uses the levitating capsule 54 as a means of swinging up and down in response to liquid flow, it is preferred that the device be positioned at least partially vertically during operation.
[0025]
As will be appreciated by those skilled in the art, as a small amount of liquid enters the inlet passage 52, the levitating capsule 54 moves down toward the bottom of the flow chamber 40. When the levitating capsule 54 reaches approximately the same position in the flow chamber 40 as the Hall effect sensor 58, a magnet 56 located on or in the levitating capsule 54 activates the Hall effect circuit, which activates the motor 48. Let it. The motor 48 then drives the impeller 38. As impeller 38 rotates, the flow in liquid flow chamber 40 is accelerated to a desired flow rate. If the surgeon wants to stop the flow of fluid, the surgeon does not need an electrical switch and simply closes valve 36 on handpiece 18. Then, the liquid flow in the liquid flow chamber 40 is stopped, and the floating capsule 54 rises again to the upper part of the liquid flow chamber 40, so that the Hall effect switch circuit and the motor 48 are not operated.
[0026]
Preferably, the diameter of the levitating capsule 54 is such that when the flow stops and the levitating capsule rises to the top of the flow chamber 40, the levitating capsule 54 seals around the inlet passage 52 and the liquid flows back from the flow chamber 40. Large enough to prevent In addition, ribs, protubalances, and the like may be spaced at the lower end near the inside surface of the flow chamber 40 so that the buoyant capsule 54 does not seal the flow of liquid from the bottom of the flow chamber 40. May be preferred.
[0027]
FIG. 3 is a circuit diagram illustrating one of many suitable components and a preferred method of being connected to a motor for battery operation between voltages V + and V-. The word "sensor" in the figure is preferably a "Hall effect" sensor as described above.
[0028]
In one preferred embodiment, as shown in FIG. 1, the pump 20 is supported on the pole 16 by a bracket 26 that is adjustably secured to the pole 16 in a conventional manner. The diameter of the bracket 26 should be slightly smaller than the diameter of the pump housing so that the pump is received in the through-hole in a sliding fit and is retained by the bracket 26. Alternatively, the bracket 26 may support the housing of the pump 20 by cup support means as shown in FIG.
[0029]
In the embodiment of FIG. 1, a single extension tube 30 connects the pump 20 to the bladder 12. As shown more clearly in FIG. 4, tube 30 has spike connectors 64, 66 hermetically mounted on opposite ends of tube 30. The spike 64 is adapted to be connected to the bladder 12 through a common luer connector. Spike 66 is connected to inlet 32 such that the end of spike 66 is located within the upper portion of inlet passage 52. Each of the spikes 64, 66 has an annular rim 68, which is visible on the spike 66 and serves as a receiving surface for the end of the tube 30. In addition, the rim 68 contacts the upper portion of the inlet 32 to provide a secure connection without looseness.
[0030]
Inlet 32 may have a receptacle 70 that is ultrasonically welded or otherwise permanently affixed to the top of inlet 32 to connect with spike 66. The receptacle is hollow to receive the spike 66 and includes an internal shoulder 72 for receiving the spike 66 well. An O-ring seal 74 is located immediately below the annular shoulder 72 in the inlet passage 52 to maintain a fluid-tight condition.
[0031]
As seen in the embodiment of FIG. 1, the bracket 26 is adjusted so that the pump 20 is aligned with the bladder 12 or is located directly below the bladder 12. Next, the tube 30 is connected to the pump 20 through the spike 66 and to the liquid bag 12 by the spike 64. The clip 76 is preferably located in the center of the tube 30 and blocks the flow of liquid when the tube 30 is connected, preventing the liquid from flowing from the liquid bag 12 to the pump 20 automatically. When it is desired to start the liquid flow, the clip 76 is removed so that the liquid can flow freely from the liquid bag 12 to the pump 20 without any obstacle.
[0032]
Inlet 32, including receptacle 70, is designed to match only standard spikes 66 and is not designed to match the outlet of a standard bladder. The connection between the spike 66 and the inlet 32 is configured and arranged to provide a liquid tight engagement. However, the coefficient of friction between the inner surfaces of the inlets 32, for example, the inner shoulder 72 and the spike 66, is lower than required to support the weight of the pump 20. Therefore, if the pump 20 is not supported by the bracket 26, it will come off the spike 66 due to the weight of the pump 20, and the pump 20 will fall. By having to support the pump 20 to maintain a fluid connection, the possibility of the pump falling out of the bladder, spilling liquid or creating an unsanitary situation and a hazard to the patient is greatly increased. Reduce. The spike 66 is connected to the receptacle 70 in FIGS. However, the spike 66 may be connected directly to the inlet 32.
[0033]
The pump 20 is depicted in FIG. 1 as being supported directly below the liquid bag 12. However, as shown in FIG. 5, the tube 30 allows the pump 20 to be located closer to the pole 16. The arm 14 can extend from the position shown in FIG. 1 so that the liquid bag 12 is vertically separated from the pump 20. Alternatively, pump 20 may be supported closer to pole 16 using a modified bracket 78. Supporting the pump 20 at a location remote from the bladder 12 provides more space for the surgeon to move about, and further reduces the likelihood that the surgeon or other personnel will remove the pump 20 from the bladder 12 due to a collision or the like. .
[0034]
FIGS. 6 and 7 show another embodiment in which the installation position of the pump 20 is secured at a location away from the liquid bag 12. In this embodiment, the impeller housing 80 has been modified to include an inlet connector 82 that extends laterally from the impeller housing 80 and has a generally upwardly bent end 84 for connection with a spike connector 85. The spike 84 preferably includes a seal 86 adapted to be received in a passage 88 and a seal 89 sealingly engaging the top of the passage 88, as shown in FIG.
[0035]
FIG. 8 shows another embodiment in which the pump 20 can be installed at a position remote from the liquid bag 12. In this embodiment, the pump 20 is supported by the arm 14 of the pole 16 on the side opposite to the liquid bag 12. The impeller housing 90 has a support loop 92 adapted to be suspended from the arm 14a. The impeller housing 90 also has an inlet connector 94 that extends laterally from the impeller housing 90 to connect with the tube 30. This connection is made by pressing friction as shown in the figure or by a conventional spike connector.
[0036]
9 and 10 show still another embodiment in which the pump 20 is connected to the liquid bag 12. The impeller housing 96 includes a dual inlet connector 98, 100 for connecting to another flexible tube 102, 104. The tubes 102, 104 each have spikes 106, 108 adapted to engage each other. The spikes 106, 108 are pushed over the seal 110a opposite the bladder outlet 110 so that the ends of the spikes 106, 108 engage. The spikes 106, 108 are configured and arranged to form an opening 112 that allows the flow of liquid from the bladder 12 to the tubes 102, 104 and the pump 20 when their ends are engaged. . Each spike 106, 108 has an outer seal 114 to prevent liquid from leaking from the liquid bag 12. With this system, the spike does not need to fit into the outlet of a standard size bag.
[0037]
FIG. 10 is an embodiment similar to that shown in FIG. 9, except that the spikes 106, 108 are pushed vertically apart on the seal 110a opposite the liquid bag outlet 110 and the spikes 106, 108 are shown. Ends do not engage, but are spaced so that liquid flows through each spike.
[0038]
11 and 12 show another embodiment for connecting a supported pump to a liquid supply. In this embodiment, the impeller housing 120 has a hollow V-shaped joint 122 secured thereto at one end. The tube 124 is secured to the opposite end of the V-shaped joint 122 and has on its opposite side a standard spike for connection with the bladder 12. The V-shaped joint 122 allows the pump 20 to be installed at a position other than directly below the liquid bag 12, and the liquid flows freely from the liquid bag 12 to the pump 20 as long as the pump 20 is supported by the bracket 26. However, as best seen in FIG. 12, when the pump 20 is disengaged from the bracket 26, the tubing 124 is scissored at the central portion 128, preventing fluid flow. This advantageously prevents liquid flow if the pump is not properly supported in the bracket.
[0039]
FIGS. 13-15 show the pump 20 in a supported state that can be connected to the two bladders 130, 132 so that the surgical procedure can be continued without interruption during the bladder change. In this embodiment, the impeller housing 134 has a Y-joint 136 connected thereto. The Y-joint 136 has a base connector 138 adapted to be inserted into the inlet of the impeller housing 134. The two branched connectors 140, 142 are adapted to connect to the bladders 103, 132 having tubes 144, 146, respectively. As seen in FIGS. 14 and 15, the Y-joint 136 is hollow and forms a path for the liquid such that the paths 148, 150 openly connect into the path 152 of the base connector 138. I have. The base connector 138 has a shape generally corresponding to the inlet connector of the impeller housing 134 and is adapted to hermetically engage therewith. The branch connectors 140, 142 connect to the respective tubes 144, 146 by pressing or friction, and the middle end of each tube contacts the annular rim 154. The impeller housing 134 has a blunt joint 156 for connecting with the Y-shaped joint 136. Receptacle 157, similar to receptacle 70 described above, is ultrasonically welded or mechanically joined to blunt joint 156. This joint is provided with a lubricious seal or O-ring similar to that shown and described in FIG. 4, which is installed after welding or joining.
[0040]
As shown in FIG. 13, the pump 20 is supported by a bracket 26. Tubes 144 and 146 are then connected to respective bladders 130 and 132 by conventional spikes. Each tube 144, 146 preferably includes a clamp 158 that scissors the tube or otherwise blocks the flow of fluid as the tubes are connected to their respective bladders. If liquid is desired to flow, one of the clamps 158 is removed and the liquid flows freely from one of the liquid bags to the pump 20 through the Y-joint 136. When one bag is empty, the clamp 158 on the other tube is released, allowing the liquid to flow freely from the other bag while the other bag can be replaced as needed.
[0041]
The contact surfaces between the Y-joint 136 and the tubes 144 and 146 can be designed such that when the pump 20 is disengaged from the bracket 26, the pump 20 is disengaged from the Y-joint 136 by its own weight or other predetermined force. This facilitates replacement of the pump unit. Because the O-ring seal associated with the Y-joint 136 is designed to have surface or mating contact, the lubrication of the O-ring does not create a frictional force greater than the weight of the pump.
[0042]
16-18 show another embodiment in which the pump 20 is adapted to be connected to two fluid bladders 130,132. In this embodiment, the impeller housing 134 has a W-shaped joint 160 that is joined or otherwise permanently fixed to the impeller housing 134. W-joint 160 includes a base connector having branching and downward extending connectors 164 and 166, respectively, adapted to connect with flexible tubes 168 and 170. Each tube 168, 170 has a standard distal end spike permanently joined thereto for connection with the bladder. The operation of this embodiment is similar to the description of the embodiment of FIG. 13 in which the pump 20 having the W-shaped joint 160 is supported by the bracket 26. The tubes 168, 170 are then connected to their respective bladders, and if liquid is desired to flow, one of the clamps 172 is disconnected from its associated tube. As described above with reference to FIG. 13, when one of the liquid bags is empty, the clamp 172 of the other tube is removed, and the liquid flows from the other liquid bag. During this time, the other liquid bag can be replaced if necessary.
[0043]
In this embodiment, the pump 20 can be connected to two liquid bags at a time, but it is necessary to install the pump in the bracket 26 or to support it with the liquid in order to allow the liquid to flow and operate properly. Become. When the pump 20 is held by the bracket 26 and adjusted to the desired position, the tubes 168, 170 are free to flow liquid from the respective liquid bag x to the pump 20 as long as the clamp 172 is removed. However, when the pump 20 is disengaged from the bracket 26 and hung by its own weight, the tubes 168, 170 are scissored at 172 in FIG. 18 to block the flow of liquid.
[0044]
FIG. 19 shows another embodiment in which the pump 20 must be supported for proper operation. In this embodiment, the pump 20 is supported in a carriage 180 having a holder 182 for supporting the pump 20. The carriage 180 further includes a microswitch 184 that completes an electrical circuit when the pump 20 is in the holder 182 and is connected to the bladder 186 by a standard spike connection 188, and supplies power from the pump motor 20 through the carriage 180 to the pump motor. And a microswitch 184 configured and arranged to supply to the
[0045]
As shown in FIGS. 19A and 19B, the microswitch 184 has a spring bias plunger 189 with electrical contacts and typically biased to an open position by a spring 190 (FIG. 19A). When the carriage 180 is suspended from the arm 14, the plunger 189 moves and closes due to the compression of the spring 190 (FIG. 19B) and comes into contact with the carriage 180 to complete the electrical circuit that powers the pump motor.
[0046]
FIGS. 20 and 21 show another embodiment in which the pump 20 is supported by a hanging rod 200 having a gravity switch 202 mounted on a pump housing 204. As seen in detail in FIG. 23, the hanging rod 200 has an inwardly bent end 206 that extends into the pump housing 204 from a long slot 205 that slidably receives the end 206. The slide 208 is secured to one end 206 just inside the pump housing 204 and has electrical contacts. The pump 20 is connected to the electrical contacts 208 until the pump 20 is lowered by its own weight when the pump 20 is connected to the liquid bag 210 and the pump housing 204 contacts the inner extension 212 and contacts the wire 214 leading to the pump motor. Is attached to the hanging rod 200 so as to slide with respect to. Thus, an electric circuit is completed, and power is supplied to the pump 20.
[0047]
FIG. 22 shows another embodiment in which the pump 20 is supported on a hanging sling 216 suspended from the pole 16. Pump 20 is supported by a central portion 218 having an opening that receives pump 20 in a sliding fit.
[0048]
Figures 23-25 show an embodiment that opens directly while the pump is supported by the bracket, and is directly connected to the bladder by a slide valve 220 that closes when the pump comes off the bracket and hangs from the bladder. In this embodiment, the slide valve 220 is installed in a retainer housing 222 that is permanently fixed to the impeller housing 224. The retainer housing 222 has a liquid path 226 that opens to a path 228 in the impeller housing 224. When the slide valve 220 is in the open position, liquid flows through the slide valve 220 into the liquid paths 226, 228 and to the pump. The slide valve 220 includes an O-ring seal 242 that sealingly engages the retainer housing 222.
[0049]
The slide valve 220 has a stepped tubular portion 230 for connecting to a liquid bag. By connecting the slide valve 220 to the liquid bag, the slide valve 220 moves downward with respect to the retainer housing 222 to the position shown in FIG. As long as the pump is supported under the liquid bag, the slide valve 220 remains open as shown in FIG. In this position, liquid flows from the bladder to path 232 and ports 234, 236 to liquid paths 226,228. However, when the pump comes off the bracket and hangs from the liquid bag, the pump falls under its own weight, and the retainer housing 222 slides with respect to the slide valve 220, and the lower end of the slide valve 220 engages with the upper wall 240 of the retainer housing 222. The ports 234 and 236 are then closed as seen in the closed position of FIG.
[0050]
FIG. 26 shows a system in which the pump 20 is connected to a liquid bladder 250 suspended in a carriage 252 suspended from the standard arm 14. The standard spike 254 is inserted into a liquid bladder 250 having a standard outlet. Spike 254 is then connected to inlet fitting 258 on pump 20. The liquid bag 250 is set in the carriage 252, and a gap 260 is formed between the arm 14 and the liquid bag 250. When the liquid bag 250 directly descends from the independent arm 14, the liquid bag 250 comes out of the pump 20. I have.
[0051]
Figures 27-32 show another system for supporting a pump connected to a liquid bag. In this embodiment, the L-shaped bracket 300 is provided to suspend on a standard pole. The L-shaped bracket 300 has an elongated body 302 that adjustably supports an extension member 304 that supports the pump 20. In FIG. 27, the extension member 304 is adjustable over the entire length of the body 302 to allow connection of liquid bags of various sizes. 28 and 29 illustrate one embodiment of a support member 305 in which a liquid bag is supported by inserting a pin 306 (FIG. 29) into one of a number of holes 308 in the support member 305. Alternatively, the bladder can be hung from a hook or prong along body 302. The pump 20 is connected to the liquid bag by a spike 312. The extension member 304 has a connector portion 310 to which both the pump 20 and the spike 312 are screwed. The impeller housing 314 has outer threads 316 for threading with threads 318 inside spikes 312. The spike 312 further has an outer thread 320 for screwing with the inner thread 322 of the connector portion 310.
[0052]
In another embodiment of FIG. 33, the connector portion 310 has an outer thread 324 for threading with the inner thread 325 of the spike 312 so that the spike is threaded onto the top of the connector portion 310. Has become. The impeller housing 326 has an outer thread 327 for screwing with an inner thread 328 provided on the connector section 310.
[0053]
Instead of threads, the pump can be connected to the L-bracket extension 340 by a bayonet-type lock as shown in FIG. In this embodiment, the spike 342 is connected to the upper end of the impeller housing 344 by a press connection with the O-ring 346 to achieve liquid tightness. The impeller housing 344 is installed in the extension 340 and the spike 342 extends into the opening 348 to connect with the liquid bag. Next, the impeller housing 344 is rotated, and the protrusion 350 is fitted into the lock opening 352 of the extension 340.
[0054]
In this embodiment, the L-brackets and spikes 342 are reusable, but must be disinfected each time before use. However, the pump and spikes 342 can be disposable on a one-time basis. In either case, the pump cannot be mounted on the liquid bag without the use of an L-shaped bracket.
[0055]
FIG. 36 shows another embodiment in which, for example, the pump is connected directly to the liquid bag and is supported by special fittings. Outer joint 360 is secured to impeller housing 362 and spike 364 exits through the outer joint to connect with the bladder. The outer joint 360 has an inner member 366 having grip teeth 368 that frictionally hold the exterior of the fluid bag outlet 365 when the spike 364 is secured. In this embodiment, the pump is suspended from the bladder, but is held by frictional engagement between the inner member 366 and the outlet of the bladder.
[0056]
FIG. 37 shows another embodiment where the pump is suspended from the bladder by spikes 380. However, even if the liquid bag is punctured with a spike, the liquid flow does not start automatically. Spike 380 includes a valve lever 382 that is compressed to a normally closed position by a tension spring 383. When the spike 380 is inserted into the bladder, the bladder squeezes the valve lever 382 and the tension spring 383 is pushed to the position shown by the dashed line in FIG. Flows from the liquid bag. Liquid flow is only possible when the valve lever 382 is moved down by the liquid bag. When the liquid bag is removed, the valve lever 382 is closed by the tension spring 383.
[0057]
Alternatively, the spike 380 may be non-tubular, with the pump being in fluid-tight engagement with the bladder such that the pump is suspended independently of the bladder by the spike 380, and the valve 382 be part of the impeller housing. Can be.
[0058]
38 and 39 show another embodiment in which the pump is suspended from the liquid bag by a spike 400. FIG. The retainer housing 402 slidably supports a spike 400 having upper and lower detent recesses 404, 406 that selectively engage detents 408 of the retainer housing 402. Stopper 412 is fixed in retainer housing 402. When spike 400 is connected to the bladder, spike 400 moves to the closed position shown in FIG. 38 where detent 408 is located in upper recess 404. In this position, the stopper 412 closes the liquid passage 414 to shut off the liquid flow. Next, the user must pull down the pump and move the detent 408 into the lower recess 406 to open the path 414.
[0059]
FIG. 40 shows another embodiment for supporting a pump from a liquid bag 450. In this embodiment, spike 452 has a retainer fan 454 that is retracted until spike 452 enters liquid bag 450. The outer diameter of the spike 452 is smaller than the inner diameter of the outlet 456 of the liquid bag, and a gap is formed between the wall of the outlet 456 of the liquid bag and the spike 452. In use, the user pierces the liquid bag 450 with a spike while retracting the retainer fan 454. When a spike is pierced into liquid bag 450, retainer fan 454 is opened by actuator 458 of impeller housing 460, and retainer fan 454 moves into liquid bag 450 and opens. Retainer fan 454 opens fully as it passes through liquid bag outlet 456. Next, the user releases the pump that falls by its own weight, and allows the retainer fan 454 to stop inside the liquid bag 450. The liquid bag outlet 456 has a seal 462 to prevent loss of liquid.
[0060]
FIGS. 41 and 42 show one embodiment for operating the retainer fan 454. FIG. The retainer fan 454 has an arm 460 that receives pressure from a spring that is always closed as shown in FIG. To open the retainer fan 454, the actuator 458 is moved to the left as shown in FIG. 42, and in the closed position, the bottom 462 resting on the upper surface 464 of the actuator 458 moves down along the surface 468, and Rest on 466. As the bottom moves, the arm 460 opens under pressure (FIG. 41) and rests or engages the inner surface 470 of the bladder 450.
[Brief description of the drawings]
[0061]
FIG. 1 is a schematic diagram of an exemplary surgical irrigation system according to the present invention.
FIG. 2 is a schematic cross-sectional view of a preferred pump for use with the present invention.
FIG. 3 is a schematic diagram of an embodiment of the present invention, a “Hall effect” switch circuit that can be used in the pumps of FIGS. 1 and 2;
FIG. 4 is a schematic view of a connection portion of a flexible tube with a pump impeller housing.
FIG. 5 is a schematic diagram of another embodiment of the system of FIG.
FIG. 6 is a schematic view of a modified pump impeller housing.
FIG. 7 is a partially developed schematic view of a flexible tube and a connection portion between the tube and the impeller housing.
FIG. 8 is a schematic illustration of another embodiment of a pump suspended from an IV pole.
FIG. 9 is a partial schematic diagram illustrating another embodiment using a plurality of tubes connecting a pump to a liquid bladder.
FIG. 10 is a view similar to FIG. 9 with the tubes connected to the liquid bag at intervals.
FIG. 11 is a schematic diagram showing a pump connected to a liquid bag by a V-shaped joint.
FIG. 12 shows the pump of FIG. 11 removed from the support blanket.
FIG. 13 is a schematic view showing a pump connected to a liquid bag by a Y-shaped joint.
FIG. 14 is a schematic diagram showing the Y-shaped joint of FIG. 13;
FIG. 15 is a cross-sectional view of the Y-shaped joint of FIG.
FIG. 16 is a schematic diagram showing a pump connected to a liquid bag with a W-shaped joint.
FIG. 17 is a sectional view of the W-shaped joint of FIG. 16;
FIG. 18 is a sectional view similar to FIG. 17 with a flexible tube connected to a W-shaped joint.
FIG. 19 is a schematic view of another support means for a pump having a microswitch.
19A is a partial schematic view of the microswitch of FIG. 19 in an open position.
FIG. 19B is a view similar to FIG. 19A including the microswitch in the closed position.
FIG. 20 is a schematic illustration of another embodiment with a hanging support including a weight switch.
FIG. 21 is a partial sectional view of a gravity switch.
FIG. 22 is a schematic diagram showing a support supported by a hanging sling.
FIG. 23 is a partial cross-sectional view of a modified impeller housing having a slide valve depicted in an open position.
FIG. 24 is a view similar to FIG. 23, showing the slide valve depicted in the closed position;
FIG. 25 is a schematic view of the slide valve used in FIGS. 23 and 24.
FIG. 26 is a schematic view of a liquid bag supported in a carriage.
FIG. 27 is a schematic diagram of a pump supported by an L-shaped bracket.
FIG. 28 is a schematic view similar to FIG. 27 with a spacer for supporting a liquid bag.
FIG. 29 is a partial schematic view showing a liquid bag supported by the spacer of FIG. 28.
FIG. 30 is a partially developed schematic view showing connection of an impeller housing to an L-shaped bracket.
FIG. 31 is a schematic view of the assembly of the device shown in FIG. 30.
FIG. 32 is a partial sectional assembly view of FIG. 31.
FIG. 33 is a partial sectional assembly view showing another assembly of the impeller housing to the L-shaped bracket.
FIG. 34 is a partial cross-sectional view of a pump attached to an L-shaped bracket by a bayonet lock.
FIG. 35 is a partial cross-sectional view of another connection of a pump to a liquid bladder by a wedge mating connector.
FIG. 36 is a partial schematic view showing another embodiment having a plunger valve.
FIG. 37 is a partial cross-sectional view of an embodiment of a pump with a detent mechanism for starting and stopping liquid flow, with the mechanism in a closed position.
FIG. 38 is a view similar to FIG. 37 with the mechanism in the open position;
FIG. 39 is a partial schematic view showing a pump supported from a bag by a retainer fan.
FIG. 40 is a partial schematic diagram showing the actuator for the retainer fan, with the retainer fan in the open position.
FIG. 41 is a partial schematic diagram similar to FIG. 40 with the retainer fan retracted.

Claims (23)

A surgical irrigation system,
A fluid supply having an outlet for supplying fluid to the pump device, wherein the pump device has a fluid connection between the fluid source and the pump device when the pump is held by a support means; A surgical irrigation system characterized in that it is configured and arranged to establish only. The system according to claim 1, wherein
The system wherein the pump device is connected to the fluid source by a friction fit using a flexible tube, the coefficient of friction of which is lower than required to support the weight of the pump. The system according to claim 1, wherein
The pump device includes an impeller housing having an inlet connection adapted to connect with the tube, the inlet cooperating with the tube to provide a fluid flow path from the fluid supply to the pump. A system characterized in that: The system according to claim 3, wherein
The system of claim 1, wherein the inlet connection extends laterally from the impeller housing. The system according to claim 4, wherein
The system of claim 1, wherein the impeller housing further comprises a hook for suspension from a pole. The system according to claim 1, wherein
The system of claim 2, wherein the impeller housing has a dual inlet for connecting to another tube, wherein the tube is connected to the fluid supply opposite the outlet. The system according to claim 6, wherein
The system wherein the tube has a spike connected to the fluid supply at the top of a seal. The system according to claim 6, wherein
The system wherein the tube comprises a spike having a terminus that engages when inserted into the fluid supply. The system according to claim 6, wherein
The system wherein the tube is connected to the outlet of the fluid supply at vertically spaced locations. The system according to claim 1, wherein
The system further comprising a pinch device for providing a fluid connection between the fluid supply and the pump. The system according to claim 10, wherein
The pinch device is a V-shaped joint connected to the impeller housing, having a tube joined thereto, and configured and arranged to shut off fluid flow when the pump device is disengaged from the support means. A system characterized by the following. The system according to claim 9, wherein
The system according to claim 1, wherein the pinch device is a Y-joint connected to the impeller housing for connection to two fluid supplies through two separate tubes. The system according to claim 12, wherein
The system according to claim 1, wherein the impeller housing includes a receptacle to which the Y-shaped joint is connected. The system according to claim 10, wherein
The pinch device is a W-shaped joint connected to the impeller housing for connecting to two separate tubes for connecting to two fluid supplies, wherein the W-shaped joint is connected to the pump device. The system is configured and arranged such that when the tube is disengaged from the support means, the tube is clamped. The system according to claim 14, wherein
The system according to claim 1, wherein the W-shaped joint has a base member and an opposed downwardly extending connector for connecting to the tube. The system according to claim 1, wherein
The system of any preceding claim, wherein the support member is a carriage with a microswitch that completes an electrical circuit that powers the pump device when the carriage is hung on an IV pole. The system according to claim 1, wherein
The support means is a hanging rod having an end connected to the pump device and forming a gravitational switch that completes an electric circuit for supplying power to the pump device. A system configured and arranged to complete an electrical circuit only when supported by a hanging rod. The system according to claim 1, wherein
The system according to claim 1, wherein said support means is a hanging sling. The system according to claim 3, wherein
Furthermore, a slide valve is provided in the impeller housing and is connected to the liquid bag, and the slide valve is opened only when the pump device is supported in the support means. system. 20. The system according to claim 19, wherein
The slide valve is slidably connected to the impeller housing, and when the flow detector comes off the support means, falls by its own weight, slides on the slide valve, and the valve closes to prevent fluid flow. A system characterized by the following. The system according to claim 1, wherein
The fluid supply is suspended from the carriage and there is a gap between the arm of the pole and the top of the liquid bag, which prevents the suspended liquid bag from being spiked by the pump. Features system. The system according to claim 1, wherein
The system according to claim 1, wherein said support means is a bracket. 23. The system according to claim 22, wherein
The system according to claim 1, wherein said support means is an L-shaped bracket.

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