TWI328460B - A reduced pressure adapter for connecting a reduced pressure source to porous pad and a system for applying reduced pressure to a tissue - Google Patents

Description

1328460 IX. DESCRIPTION OF THE INVENTION: FIELD OF THE INVENTION The present invention relates generally to systems and methods for tissue (especially open wounds: decompression therapy. The present invention more specifically relates to • Tissue dressing and decompression source combined with force-relieving treatment (RPWT): System and method of connection between instruments. [Prior Art] • Various wound healing has been developed over time. And the healing process. Wound healing usually involves the inward movement of the wound adjacent to the epithelium and subcutaneous renting. The inflammatory process usually helps the movement, so blood flow is increased and various functional cells are activated. Because of this inflammatory process For this reason, the flow of blood through the damaged or ruptured blood vessels will stop due to capillary-level occlusion, after which the cleaning and recovery surgery can begin. Unfortunately, when a wound is large or infected, the process is hindered. t, a blood-seeking area is formed near the surface of the wound (i.e., where the tissue is locally swollen and restricts • blood flow to the area of the tissue). In the absence of sufficient ik flow, the epithelium and subcutaneous tissue around the injury π only reduce the oxygen and nutrients obtained, and it is also less likely to successfully resist bacterial infections, and thus it is more difficult to heal the wound naturally. Some wounds are hardened and inflammation is so severe that it cannot be healed by stapling and suturing. Examples of wounds that are not easily treated with staples or sutures include: larger, deeper, open wounds; sore ulcers; An ulcer caused by chronic osteomyelitis, and subsequent development of a local cortical burn of the whole cortical burn. Because the mechanical wound healing device has several shortcomings, it has been developed for borrowing

Il9764.doc 1328460 Method and apparatus for draining wounds by e force only and/or periodic decompression. According to the findings, when applied to the _sufficient area of the 6-Hai wound, the decompression can cause the epithelial and subcutaneous tissues to move toward the wound. In fact, the application of reduced pressure to a wound is usually accompanied by mechanical contraction of the wound while expelling excess fluid. In this way, RPWT enhances the natural inflammatory process of the body while reducing the intrinsic side effects of the fortunate, such as the edema caused by the lack of proper vascular structure necessary for venous return. Kinetic Concepts, Inc. of San Antonio (Texas, TX) recently popularized the vacuum or decompression induced healing of open wounds by its commercially available RpWT system line. . The process of inducing healing of sacral decompression is described in the US Patent No. 4,969,88, issued to Zamierowski, and its related patents, in the year of 丨 〇 丨 曰 曰 曰 1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 1992 U.S. Patent No. 5,100,396, issued on Jan. 3, the U.S. Patent No. 5,261,893, issued on Nov. 16, 1993, and U.S. Patent No. 5,527,293, issued on Jun. The content is incorporated herein by reference. Further improvements and modifications to the RPWT process are also described in U.S. Patent No. 6,071,267 awarded to Zamierowski on June 6, 2002, and awarded to Argenta on June 10, 1997 and July 8, 1997, respectively. The disclosures of the U.S. Patent Nos. 5,636,643, issued to U.S. Pat. Additional improvements are also described in U.S. Patent No. 6,142,982 issued to Hunt et al. An important component of the RPWT system is the source of decompression (usually a vacuum II9764.doc 1328460

A shoulder or a device or structure that is attached to a component (typically a layer of particulate foam) enclosed within the pad or wound dressing. The reduced pressure port structure must adhere to the wound dressing and be in fluid communication with the foam layer of the dressing. This preferably has a gentle profile (like an attachment pad) to make the patient comfortable and safe. Various efforts have been made in the past to provide a suitable pipe joint configuration that can effectively connect a source of extreme decompression (usually by a catheter) to a tissue location. Coordinated monitoring of continuous and/or periodic decompression of a wound

The pressure at the location of the tissue due to the application of the RPWT system. Thus, providing a system that can monitor and respond to changes in the level of decompression applied to the location of the tissue becomes heavy. It has been found that, under certain circumstances, a variety of RpWT procedures including decompression applied cyclically to the wound have cups. A constant and tightly adjusted application of a reduced pressure may be beneficial for other situations. In any case, it is valuable to accurately monitor the level of decompression applied at the location of the tissue. τ f is typically not measurable by simply measuring the level of subtraction provided by the subtraction (4) at the source or in the pipeline connecting the source to the wound dressing. The position of the position of the Xuan organization is at a certain level. The fluid flowing in the main chamber associated with the Rp wt system prevents the use of the pressure level measurement at the instrument as an accurate indication of the pressure level or enthalpy at the tissue location itself. Thus, other methods for directly monitoring the pressure level of the wound are needed. = Go, in order to provide a wound position to the monitoring instrument - a separate force sensing or measuring pipeline has been made to do the RPWTP 7"忒荨 Efforts usually provide a separate lumen within the officer or fully utilize one of the conduits „ The only segment H is the assumption made by the system for this aid. ^ M9764.doc 1328460 Cavity or measurement catheter The wound dressing is imaginary... The Dunke department is open to the port and is unobstructed. This is not a valid assumption, because the measurement of the lumen is not the main fluid tube of the RPW system. Fluid, but JI: also aggregates to suppress or completely impede its function /, still month b ", L body and other materials. These measurements

The usually small cross section of the lumen, the size of the H j braid, and thus the fluid or other substance that can be introduced into the body. # π Its substance enters the "portal opportunity" but the same small cross section will result in even A slight retardation can cause a large (four). [Explanation] An exemplary embodiment of the present month is for a connector component between a wound dressing and a reduced pressure source in a wound decompression therapy (RPWT) system. Improvements in structure and use, and more particularly, certain exemplary embodiments provide: (Α) a gently depressurized pipe joint that improves work reliability and prevents or reduces undesired fluid from entering the measurement lumen (Β) - a modified reduced pressure delivery catheter comprising an elliptical catheter structure having a larger inner lumen and a smaller outer lumen to support the dynamic pressure functionality described below; (C) an amount A method for measuring the improvement and dynamics of wound pressure, which overcomes some of the pressure control problems seen in the RPWT system; (D) - Improved decompression tube joint structure with rotational function so that the patient can comfortably attach Paste the decompression pipe Structure; and (Ε) - a structure for indicating the presence or absence of bacteria in the decompression pipe joint and the fluid conveyed therein. § The modified decompression pipe joint includes: a pipe casing having a main pipe, and at least A secondary conduit for introducing fluid into a wound dressing.

Il9764.doc 1328460 _ The pipe joint may also include a bottom having a generally circular shape. The official track housing includes a recessed area defining a surface of the human 0. The main conduit connects the sinuous inlet surface to the main lumen of a multiple lumen decompression delivery catheter, and the auxiliary channel connects the inlet surface to the auxiliary lumen of the multiple lumen decompression delivery catheter. A groove on the inlet surface preferentially directs liquid and other fluids into the main conduit to prevent clogging of the auxiliary conduits, which are typically used to measure the pressure within the wound dressing. . The Xuanjing modified decompression delivery catheter includes a larger main internal lumen to effect conduction of reduced pressure to the tissue and to transfer fluid away from the set of tubes; - Setup: support dynamic pressure functionality as described below 'money 2 Each of the auxiliary/equal g chambers is open or closed (blocked) to ensure continuous pressure measurement continuity. The reduced pressure delivery conduit can be fitted to the modified reduced pressure fitting described above' or it can be used with other fittings to fluidly connect the defensive source and the force sensor to a porous viewing or Other distribution manifolds. «Hai's improved method for measuring pressure can solve the existing problems in the Rp system due to excessive fluid intrusion into the system to measure the lumen. Each of the auxiliary lumens is monitored to understand and respond to changes in the reduced pressure source (and thus the wound dressing itself). : Medium: A slow response of the auxiliary lumen indicates that there is clogging in the lumen, and because the RPWT system will measure the dust force at the auxiliary lumen as the accurate retest, the first step is allowed to block the fluid. The method of lumen clearance introduces elevated pressure into the blocked lumen. The first of the two auxiliary lumens can continue to be used as a measure of the pressure at the tissue site.

H9764.doc • The monitoring channel of 10, 1328460 works. In the '%' case, the improved decompression pipe joint structure has a rotation function that improves the convenience and comfort of the mind, the pipe casing is positioned and rotatably attached to the periphery Bottom: Allows the reduced pressure fitting and the attached conduit to rotate relative to the wound σ dressing, thereby reducing the pressure on the dressing and the reduced pressure fitting. Finally, in a further embodiment, the improved pressure relief fitting includes an interior surface that is preferably formed on an inner peripheral wall of the conduit housing of the fitting to indicate the fitting housing and (Thus) whether or not fine g is present in the fluid passing through the pipe joint. The indicator surface retains a layer of volatile organic compound (VOC) sensitive material associated with various target microorganisms. The VOC sensitive surface forms a particular color pattern depending on the type of voc and, therefore, the type of U organism present. The color pattern can be visually discerned through the moon-removing material of the decompression tube joint, or can be automatically detected by photometric color analysis using one of various photometric sensor devices. In the following, many other features, objects and advantages of the invention will become apparent to those skilled in the <RTIgt; BRIEF DESCRIPTION OF THE DRAWINGS The preferred embodiments are described in detail below with reference to the accompanying drawings in which FIG. The embodiments are described in sufficient detail below to enable those skilled in the art to practice the invention, and it should be understood that other embodiments may be utilized and without departing from the spirit or scope of the invention.

Il9764.doc 1328460 In the case of a situation, make a reasonable surname, her, and. Mechanical, electrical and chemical modifications. In order to avoid familiarizing the skilled person with the sounds of the present invention, the description may omit the knowledge of the technology known to those skilled in the art from m. Therefore, the following detailed description should not be construed as limiting the scope of the invention, and the scope of the invention is defined only by the scope of the claims. Pressure reducing pipe joint

Improvements in the jRPWT system can be revealed by providing a decompression tube joint to facilitate the sinfulness of operation and preventing or reducing the entry of undesired liquid into the lumen of a decompression delivery catheter (especially with A gently contoured dressing is used when used). Conventional fittings typically include both a sensing lumen and a reduced pressure delivery lumen and an elbow housing. The failure of these decompression tube joints - a common cause is caused by liquid entering the sensing lumen - which can cause the treatment control 胄 # to be unstable and extremely 纟i 4 to cause the final closure of the device. Part of the reason for this problem is due to the location of the fluid conduction and the nature of the wound fluid.胄σ》The secretions and fluids generally have a holiday plasticity and can splash and form bubbles in the elbow of a decompression device under the influence of decompression. Thus, one object of certain exemplary embodiments of the present invention is to prevent Wound fluids and other non-gaseous fluids enter the sensing lumen. One concept of a far modified decompression fitting is to individually communicate the respective manifolds to the distribution manifold of the wound dressing, whereby the distribution manifold becomes a delta helium sensing lumen and the decompression pathway The barrier between the barriers. The bottom side of the decompression pipe joint is provided with a plurality of passage means for sucking together the small droplets of the flying inside of the decompression pipe joint during a high flow rate or after sucking a large liquid in the pipe . The liquid and solid matter will preferentially enter the 119764.doc 12 460 460

* S-cavity' and away from the smaller auxiliary measuring lumen, which helps prevent, etc., the lumen being blocked. The concept further includes providing a bias 1 in the liner to measure the lumen port&apos; which is designed such that in most of the positionings the two should be above the level within the distribution manifold of the dressing. The decompression tube joint is intended to operate in conjunction with the dynamic house control method described in more detail below. The reduced joint may also include a viscous drape or cover that secures the reduced pressure fitting in the wound. To increase patient comfort, the contour of the reduced pressure joint is gentle and the reduced pressure fitting Preferably, the elbow is elliptical so that the connecting catheter can be simply delivered away from the tissue site. Referring first to Figure 1, a component included in a wound decompression therapy (RPWT) system is generally outlined, including an exemplary embodiment of the present invention. Improved elements of the embodiment. The three main components of the rpwt system 1 include a wound dressing 12, a reduced pressure delivery catheter 14 and a distal fluid container and instrument 16.

The wound dressing 12 generally includes a distribution manifold 24 (e.g., a porous liner or granule foam) and a hood or drape 26 that secures the distribution manifold at a tissue location. The dressing 12 can also include a modified reduced pressure fitting 22, as shown in the figure, which is positioned on the distribution manifold 24, and by means of a cement positioned on the reduced pressure fitting 22, the wound cover 26 Or a separate adhesive cover associated with the reduced pressure fitting 22 to adhere to the distribution manifold. The reduced pressure delivery catheter 14 is a multiple lumen catheter comprised of one or more catheter segments 28 that provides a combined structure between the reduced pressure fitting 22 and the container connector 34 positioned on the fluid container 18. Continuous pipe. As will be described in more detail below and as is known in the art, liquid and other effluent aspirated by the RPWT system 10 are purged from the conduit and stored 119764.doc 13 1328460 to vessel 18. Similarly, additional conduit sections in the form of instrumentation conduits 363 and 361® extend from the container connector 34 to the instrument assembly 20. In some embodiments of the invention, instrument assembly 2 includes a reduced pressure source 38 and pressure monitoring instrument assemblies 40a and 40b. As explained in more detail below, each of the three instrument components (9) is individually associated with one of three isolated conduits (catheters or lumens): the three isolated conduits are self-decompressing pipe joints 22 extends into the distal fluid container and instrument 16. • Referring now to Figure 2-9, the pressure relief fitting 22 is illustrated in more detail. Figure 2 provides a perspective view of the underside of the reduced pressure fitting 22 showing various structural elements within the opening of the reduced pressure fitting 22 that are adapted to contact the dispensing manifold 24 (not shown) of the wound dressing. The pressure relief fitting 22 typically includes a bottom portion 50 that is adhereable to the distribution manifold and a conduit housing 62 that is coupled to the bottom portion 5'. The duct housing 62 includes a main duct and a pair of auxiliary ducts. The bottom portion 5〇 includes a hole 53 that is positioned on the dispensing member and through which the liquid and gas can be drawn from the tissue location (collectively, &quot;fluid,'). An important feature of the improved pressure relief fitting 22 is the presence of a passage member positioned adjacent to and in fluid communication with the orifice 53 and an effective means by which the (four) passage member directs liquid into the main conduit for discharge. : The body grabs the route of the main official road to maintain the auxiliary pipeline of the system open for the purpose of pressure measurement. Referring to Figure 2, the conduit housing 62 of the relief coupling 22 includes a recessed region 54 defining an inlet surface 55. The main conduit terminates at an inlet surface 55 at a main port 6〇, and the main port is centrally located at the apex of the recessed area ^. The auxiliary pipe of S Xu is at the entrance surface 55 at the auxiliary ports 56 and 58. U9764.doc 1328460 FIG. 5 is an end view of the same structure as that shown in FIG. 4, in which the elbow region 68 is more clearly shown. This configuration and the internal configuration of the pipe housing 62. In this view, the same components associated with the adhesive decompression fitting 22 to the wound dressing are disclosed. The bottom 5 turns and holes 54 are positioned as shown in FIG. The tube housing 62 is shown positioned to receive a section of the conduit for connection to the remainder of the system of the present invention. The interior of the duct housing 62 is the main chamber interface 64 and the auxiliary chamber interfaces 48 and #49. The auxiliary lumen interface and 49 are aligned with the corresponding lumens within the delivery catheter by placing the main lumen within the catheter over the main lumen interface 64. The structure of one embodiment of a multiple lumen catheter for use in conjunction with the improved reduced pressure fitting structure of the present invention will now be described in greater detail. Figure 6 provides the same illustration as the decompression fitting 22 of Figure 4, but depicted on the opposite side. Structurally, the elements shown are identical to those of the elements not shown in Figure 4, which indicates the lateral (and to some extent, radial) symmetry of the connector. Unless otherwise indicated, the materials used to make the improved connector of the present invention may be selected from a variety of materials known in the art that are capable of maintaining sufficient stiffness or resilience to maintain the function of the reduced pressure fitting. The open lumen provides the patient with the necessary flexibility and comfort. Figure 7 provides a plan view (from below) of the reduced pressure fitting 22 and various configurations and functions of the components and components for preferentially excluding liquid and other non-gaseous fluids from the auxiliary port 56' 58 in the recessed region 54. In the figure, the bottom = P50 surrounds the edge of the recessed area 54. The auxiliary port "and" displays the position as indicated by the month, where the associated pipe extends U9764.d 丨 1328460 from port 56 and 58 to the auxiliary lumen interface (hidden and not shown in the figure). It can be seen that the main cornice 60 is centrally located within the aperture 54. The master sees that the autonomous port 60 extends through the main official cavity interface 64 (hidden and not in the figure, extending through the special test circle 9 detailing the recessed area 54 to conduct liquid to the supervisor In the road, the auxiliary structure is used for the resistance. "The thinning aid is kept unimpeded. Please refer to the (4) application of (4) related to the pipe joint of the present invention. In this figure (the same perspective view as Fig. 7) is shown. The device of the bottom side surface 52 of the crucible. The devices molded in the structure of the bottom 52 are: a bottom 4 sawtooth guiding groove 7〇, a peripheral collecting groove 72 and a groove 74. The collection 56, 58 leads and leads the main port &quot;===measurement port and is oriented to the bottom 5. The upper part is directly captured and at least-semi-introduced into the dust-reducing pipe joint' and the remaining part of the trr body's suction liquid is large Part 4 == Slot Mode Guide ^ ^ ^ ^ ° The arrangement of the zigzag channels 70 in the radial direction distributes the liquid from the auxiliary ports in the form of a funnel and two mains. In addition, the 'peripheral collection groove 72 And the intermediate collecting groove 74 will suck the liquid in between the long guiding guide groove 7〇 The flow is redirected into and out of the guide slot 7〇. An example of the redirected flow is shown in Figure 8 with a bold flow pointing arrow. Referring now to Figure 9, the housing included in the pipe is described in more detail. The device and component of the body 62 are recessed. The devices are positioned on the entrance surface 5 of the recessed region and are configured to preferentially export and import the liquid and other non-gas from the auxiliary port %, μ. Port 6 〇. The view shows that the main end 119764.doc 17 1328460 60 is centrally located within the recessed area 54 and extends from the central position to the side of the recessed area 54. The same is shown in the figure. And 58 are positioned on both sides of the central position of the main port 6〇. In this figure, the auxiliary ports 56 and 58 are circularly open σ (each having a convex peripheral edge), and the basin extends toward an open outflow point. To an internal conduit extending into the associated auxiliary lumen interface (not shown), the openings of the conduits are visible within the boundaries of the auxiliary ports 56 and 58.

The four basic devices in the structure shown in Fig. 9 are positioned to preferentially direct the liquid = decompression of the main end of the joint 22 of the f-joint 22 (the inner structure α 6 () within the first _ _ structure: when the decompression " 妾 22 22 疋The distribution of the auxiliary ports 56 and 58 near the periphery of the aperture 53 is simply positioned 'on the surface near the surface of the distribution manifold' on the distribution manifold surface. In other words, when the pressure relief fitting 22 is positioned on the wound dressing, assist The ports 56 and 58 are in contact or nearly in contact with the surface of the distribution manifold. In this manner, the possibility of splashing or agitating liquid being introduced into the ports can be reduced to the formation of the remaining three devices that introduce liquid into the main port. Structured (four) shaped grooves on respective portions of the inlet surface 55 of the recessed region 54. The first linear sawtoothed groove section 42 is positioned approximately half of the recessed area Μ (which is associated with the auxiliary port 58) The circular section is in communication. The material of the top plate of the section constituting the recessed area (10) covers and accommodates a pipe extending between the auxiliary port 58 and its interface (not shown). The top plate or wall is configured with a set of serrated grooves or strips. a liquid that will fall onto the surface The body guides the main end σ at the center of the recessed area W. Any liquid that is drawn into the opening and falls onto the portion of the surface of the population will be directly introduced into the main port 6〇 in a groove manner, and H9764.doc - 18· 1328460 is not imported into auxiliary port 58. - A similar configuration is constructed in approximately one-third of the circular radial serrated channel section 44. Since the recessed area 54 does not contain any internal conduits in this section, The serrated grooves in section 44 may extend deeper and more directly to main port 60. The radial serrated grooves are oriented from the periphery of aperture 54 toward the apex of inflow main port 60 to recessed area 54. To the streak or groove from a radius B adjacent to the auxiliary port 58 (which radially surrounds about one third of the circle)

Extend to half of the control b to the auxiliary port 5 6 . Any liquid that falls on that portion of the recessed area 514 will be concentratedly directed to the main port 60 and not to any of the auxiliary ports. Finally, the wall section supporting the auxiliary port 56 at the position where the auxiliary port 56 is suspended from the main port 6 is structured to have a downward extension from the opening of the auxiliary port 56 (normal positioning at the connector) The middle is extended upwards to the serrated or streak channel 46 of the main port 6 〇 opening.

As described above, the various internal components and components of the recessed region 54 are configured to: draw most of the liquid from the recessed area 54 to the center of the center, and only directly enter the liquid of the auxiliary 56 or 58. Was irritated into the auxiliary lumen. There is little or no inhalation in the mouth, so the writing structure can effectively reduce the possibility of obstruction in the auxiliary cavity due to liquid or material blockage. Decompression Delivery Catheter Referring now to Figure 1, the system operation of the modification 80 preferably includes a detailed description of the structure of the exemplary embodiment of the present invention. The main central chamber 82 and the auxiliary lumens 84 and 86 are delivered under reduced pressure. Auxiliary 119764.doc 1328460 The lumens 84 and 86 are typically used for dust force measurements. It is shown in the figure &quot; that the fluid flow indicated by the solid arrows will be directed through the main lumen 8 2 while the auxiliary lumens 84 and 86 will typically remain free of liquid or any non-gaseous material. The cross-sectional perspective circle shown in both Figures u and u reveals the relative cross-sectional diameter of the main lumen 82 compared to the auxiliary lumens 84 and 86. The wheeling device 8 has an elliptical cross section which optimizes the elasticity without squashing any of the lumens. The cross-sectional shape is also suitable for assisting the lumen material and %, whereby The equal lumen is properly aligned with the interface on the modified reduced pressure fitting described above. Dynamic Method of Measuring Wound Pressure The system of the present invention also includes an improved and dynamic method for measuring wound force that overcomes the problems inherent in current wound decompression therapy control systems. Various methods have been developed in the art to control the operation of wound decompression therapy products and to ensure that the wound pressure is maintained and the safety of the therapy is ensured by effectively operating the prescribed course of treatment. It is seen that the wound pressure is obtained using a pressure chamber that is shared by a pressure sensor and connected to its external lumen or multiple lumen catheter. This configuration may be plagued by several problems in the case of liquid & entering the lumen or being blocked. If such liquid intrusion occurs or . . The second system will become unstable and the pressure related alarms or instructions will not be able to #. Various mechanical remedies for such problems have been tried and some have been partially successful. However, systems as described in the prior art will ultimately be challenged by controlling the liquid in the lumen unless there is a physical barrier that allows liquid to enter the (equal) measurement lumen. One of the goals of the present invention is to provide a more reliable and healthier system when subjected to the ultimate challenge of therapy than to the early-sensor measurement lumen system. 119,764.doc

• 20- 1328460 has at least one opportunity to patrol the lumen. Decompression fittings with rotational function Currently, decompression fittings in RPWT systems are generally able to effectively connect wound decompression therapy to the wound, but do not allow repositioning of the catheter connection point (eg, in patients susceptible to skin) In the case of necrosis, and the user is not allowed to mislocate the decompression pipe joint (for example, if the decompression pipe joint faces in the wrong direction). In such cases, the user must disassemble and discard the decompression pipe joint, and in some cases the cover will be uncomfortable and annoying to the mind and the user, and will also result in additional cost reduction. The pressure tube connector provides a rotational or rotational function that allows the catheter to be repositioned without the need to remove and reposition the pressure relief fitting. This ability can be used in any situation where it is necessary to reposition the catheter to avoid tissue damage. It is an object of the present invention to provide a reduced pressure fitting structure that can be easily repositioned without the need to remove and reposition the reduced pressure fitting or the wound dressing. One of the decompression pipe joint structures will be described with reference to Figs. 13 and 14 instead of the preferred embodiment d! The decompression fitting n Q shown in Fig. 3 uses a hard plastic inner portion _ to form a load-bearing surface to seal the hard plastic inner rubber with a relatively low friction sliding across the bearing surface. A soft plastic or elastomeric polymer is combined with (iv) hard plastic _' for use as a protective and cushioning cover. Figures = and 14 show various ring assemblies that form the rotary joint of the present invention. The top rotating Pvc assembly 112 covers the top insert ring ιι4, which is itself surrounded by a 〇-shaped rubber ring n6. The figure shows the bottom. The PABS insert ring 118 securely holds the 〇-shaped ring ΐ6 between it and the top II9764.doc • 22· 1328460 insert ring 114. Then, install each of these rings at the bottom? ^(: In the ring 120, the bottom pvc ring is in contact with the bottom of the reduced pressure fitting and/or the wound dressing itself.

The internal components and components described above in connection with a non-rotating embodiment associated with the reduced pressure fitting are equally applicable herein and can be molded directly to or by positioning a molded insert to the assembly. Within the housing of a rotating assembly 112, the devices and components are integrated into the internal structure of the top rotating pvc assembly 112. In any event, the rotational benefits of the alternative embodiments can be used to achieve the same benefits of the liquid-preferred structure surrounding the lumen ports described above. Figure 14 illustrates the same components as described above, and the manner in which the components interlock and rotate with each other can be more clearly and in detail. Also shown in the figure, the fixed 〇-ring 116 is decompressed to provide a suitable seal for the internal pressure formed by the decompression pipe joint η〇. In this figure, it is also apparent how the internal components and components in the opening can be properly positioned at the top.

The bottom side of the PVC component 112 is used to achieve the function of preferentially introducing liquid into the main conduit as described above. Having a Microbial Fingerless Reduction Joint The current decompression treatment system typically does not warn the caregiver of the presence of microorganisms in the wound dressing. Many of these microorganisms can be important factors in controlling infection at the wound site. It is an object of the present invention to provide a system that alerts the caregiver of the importance of the critical microorganism in aerobic, anaerobic, gram-positive, and gram-negative classifications. The reaction or indication takes the form of a color pattern that reflects the above four categories, respectively. 119764.doc •23- 1328460

In certain embodiments, a volatile organic compound (voc) sensitive strip mounted to the reduced pressure fitting or its associated shield is used. When exposed to a target v〇c that is conventionally formed in the presence of several microorganisms, a color pattern becomes apparent and thereby the type of microorganism present in the wound fluid can be identified. Referring to Figures 15 and 16, a pressure relief fitting 122 includes a bottom portion 124 and a conduit housing 13A similar to that described above with reference to Figures 2-9. The vocal-sensitive panel 丨 28 is shown positioned within the recessed region 126 of the duct housing 13〇. As can be seen in Figure 16, since the material from which the reduced pressure fitting 122 is made is translucent and transparent, when the reduced pressure fitting 122 is secured in place and the bottom 14 is in the opposed position with the dispensing manifold of the g-wound dressing, The panel 128 sensitive to the V0C can be observed even from the outside. Thus, as shown, the preferred positioning of the voc-sensitive panel 128 is within the recessed region 126, adjacent the perimeter of the recessed region 126. Figure 15 more clearly shows the layout of the v〇c sensitive panel within the recessed region 126 where it is constantly exposed to the fluid material aspirated from the wound. α © ^ . % , , in order to be able to fully expose the panel to the wound fluid, an alternative layout of the panels can be used. It is obvious from the previous money that this article provides a kind of important advantages. While the invention has been shown to be limited only, the invention is not intended to be limited thereto. BRIEF DESCRIPTION OF THE DRAWINGS The preferred embodiments and the illustrative drawings of the present invention have been described in detail above, wherein like reference numerals refer to the same components, but the scope of the invention is broadly construed in any particular embodiment, M9764 .doc • 24- 1328460 and wherein: Figure 1 is a partial perspective view of a general arrangement of components of a wound decompression therapy (RPWT) system incorporating an exemplary embodiment of the present invention Figure 2 is a perspective view of the bottom side (open side) of the improved pressure relief pipe joint according to an embodiment of the present invention; Figure 3 is a plan view of the upper side (closed side) of the improved pressure relief pipe joint of Figure 2;

Figure 4 is a first side view of the improved pressure relief pipe joint of Figure 2; Figure 5 is an end view of the improved pressure relief pipe joint of Figure 2; Figure 6 is a second side view of the improved pressure relief pipe joint of Figure 2. Figure 7 is a plan view of the bottom side (open side) of the improved pressure relief pipe joint of Figure 2, the bottom side is configured in accordance with a first exemplary embodiment of the present invention; Figure 8 is an improved pressure reduction of Figure 2 A plan view of the bottom side (open side) of the pipe joint, the bottom side being configured in accordance with another exemplary embodiment of the present invention; and FIG. 9 is a detailed view of the recessed area of the improved pressure relief pipe joint of FIGS. 7 and 8. ;

Figure 10 is a perspective view of one of the open ends of the modified reduced-pressure delivery catheter according to the present embodiment of the present invention; Figure 11 is a longitudinal cross-sectional view of the modified reduced-pressure delivery catheter of Figure 10 - the energy of the exemplary pipe joint Figure 12 is a schematic block diagram illustrating the arrangement and functionality of a reduced pressure system in accordance with an embodiment of the present invention; Figure 13 is an improved reduced pressure exploded perspective view of an exemplary embodiment of the present invention, the reduced pressure tube The joint includes a rotary working piece; Figure 14 is a cross-sectional view of the pressure reducing pipe joint of Figure 13; I I9764.doc • 25-1328460 Figure 1 5 is a bottom perspective view of a reduced pressure pipe joint according to an exemplary embodiment of the present invention Figure, the decompression pipe joint has a panel sensitive to the presence of microorganisms; and Figure 16 is a side view of the decompression pipe joint of Figure 15, wherein the panels are visible through the transparent or translucent side walls of the decompression pipe joint .

[Major component symbol description] 10 Wound decompression treatment system 12 Wound dressing 14 Decompression delivery catheter 18 Fluid container; Fluid tank 20 Instrument assembly 22 Pressure relief fitting 24 Distribution manifold 26 Cover cloth, cover cloth 28 Catheter section 34 Container Connector 36 Instrumentation conduit 38 Decompression source, decompression pump 40a Pressure monitoring instrument assembly, force measuring device 40b Pressure monitoring instrument assembly, force measuring device 42 Linear serrated groove section 44 Radial serrated groove section wound Pressure sensor, pressure wound pressure sensor, pressure 119764.doc 1328460 46 serrated or streak groove

48 Auxiliary lumen interface 49 Auxiliary lumen interface 50 Bottom 52 Substitute bottom 53 Sub L 54 Recessed area; Hole 55 Inlet surface 56 Auxiliary port; Auxiliary 58 Auxiliary port; Auxiliary 60 Main port 62 Pipe housing 64 Main cavity interface 66 Hole 68 Area 70 bottom jagged guide 72 peripheral collection groove 74 intermediate collection groove 80 decompression delivery conduit 82 main central lumen, 84 auxiliary lumen 86 auxiliary lumen 90 microprocessor, control 92 solenoid valve assisted measurement port assist Measure port guide groove; radial guide guide groove, conveyor main cavity controller! I9764.doc •27· 1328460 94 Solenoid valve 110 decompression pipe joint 1 12 top rotating PVC component 114 top ABS insert ring 1 16 0 shape Ring 118 bottom ABS insert ring 120 bottom PVC ring 122 decompression pipe joint 124 bottom 126 recessed area 128 V 0 C sensing panel 130 pipe housing

Il9764.doc -28-

Claims (1)

132846 1 year 'month pain repair' is replacing page 096112899 patent application factory Chinese patent application scope replacement (99, patent application scope: a decompression for connecting a decompression source to a porous liner Pipe joint The pipe joint includes: a pipe casing having a recessed area defining an inlet surface; a main pipe passing through the pipe casing in fluid communication with the main port on the inlet surface; at least one auxiliary pipe 'passing through the conduit housing and one of the auxiliary ports for fluid communication; a nozzle positioned on the inlet surface to direct liquid from the auxiliary port and into the main port; a bottom 'attachment To the duct housing such that one of the bottom holes surrounds the recessed area; and a radial groove positioned on the bottom to direct liquid from the periphery of one of the bottoms to the auxiliary duct. The joint of the pipe, wherein the pipe casing is rotatable about the bottom. 3. The pipe joint of claim 1, further comprising: an intermediate collecting groove positioned on the bottom to introduce the liquid In the radial groove. The joint of the month 3 of the joint is 'the middle of the pipe casing can be turned around the bottom 5. As in the official joint of the third of the three, wherein the groove comprises: About half of the linear groove segments; and about one-third of the radial groove segments of the surface. 119764-990528.doc 6. 6. The pipe joint of claim 3, further sentenced human/inclusive-elliptical a reduced pressure delivery catheter having a flow-flowing body connected to a main lumen of the main conduit and - an auxiliary lumen fluidly connected to the auxiliary conduit. The fitting of claim 3 further萧人少巴 contains a strip that is sensitive to volatile organic compounds installed in the recessed area. 8. 9. If the pipe joint of claim 3 is centered and right, there are at least two of the two eight T An auxiliary conduit having diametrically opposed auxiliary ports on the inlet surface. The fitting of claim 1 wherein the grooves comprise: - about half of the linear groove segments along the inlet surface; and a radial groove region Section 1 is approximately three-thirds of the entrance surface - The elliptical pressure-reducing delivery fluid is connected to the main pipe. The pipe joint of claim 1 further has a main cavity and a auxiliary pipe fluidly connected to the auxiliary pipe. 11. The pipe joint of claim 1 further comprising - a volatile organic compound-sensitive strip installed in the recessed area. 12. The pipe joint of claim 1 having at least two of An auxiliary conduit having a direct hollowed-out auxiliary port on the inlet surface. 13. The joint of claim 2 further comprising a wall section supporting and surrounding the auxiliary conduit, the wall section having an inner side surface, An outer side surface and a guiding groove extending along the outer side surface toward the main port. 14. A reduced pressure pipe joint for connecting a reduced pressure source to a porous liner, the pipe joint comprising: &amp; a ballast body having a recessed region defining an inlet surface; a main pipe through which Passing through the conduit housing in fluid communication with the main 119764-990528.doc 1328460 port on the inlet surface; at least one auxiliary conduit passing through the conduit housing in fluid communication with one of the auxiliary ports on the inlet surface; a groove on the inlet surface for draining liquid from the auxiliary port and leading into the main port; and a wall section supporting and surrounding the auxiliary pipe, the wall section having an inner side surface, an outer side surface, and an outer side A guide groove extending from the surface toward the main port. 15. The pipe joint of claim 14, further comprising: a bottom attached to the pipe casing such that one of the holes of the bottom surrounds the recessed region. The official joint of the monthly claim 15 wherein the duct housing is rotatable about the bottom. 17. The pipe joint of claim 14, further comprising: a bottom. P is attached to the official tunnel housing such that one of the bottom apertures surrounds the recessed region; a radial groove 'which is positioned on the bottom to direct liquid from the periphery of one of the bottoms to the auxiliary conduit; and an intermediate collection trench A slot is positioned on the bottom to direct liquid into the control grooves. 18. The pipe joint of claim 14, wherein the grooves comprise: a linear groove segment along about one-half of the inlet surface; and a radial groove along the inlet surface of about one-third Section. 19. The pipe joint of claim 14, further comprising an elliptical pressure reducing delivery conduit having a fluidly coupled to the main lumen of the main conduit and a fluid connection to the auxiliary The auxiliary lumen of the pipeline. 20. The pipe joint of claim 14 further comprising a volatile organic compound-sensitive strip mounted in the recessed region. 21. The pipe joint of claim 14 having at least two auxiliary conduits having diametrically opposed auxiliary ports on the inlet surface. 119764-990528.doc